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655-705 Level|   Resolve Paradox|         
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 11:13
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Premise: high protien diet leads to more weight loss
Premise: older adults struggle with weight loss

Paradox: success rates are same for young and old

lets look at the statements:

A: explanation of premise, not resolves paradox

B: in that case success rate should be different

C: Correct answer. it shows that since older people have struggled with weight loss, they will adhere to the diet whereas young people may not adhere to it as they have never struggled in the first place. So the success rates can be same as older adults are adhering to the diet plan and young people are not adhering to the diet plan properly.

D: marketing has no role here. both sets of persons have already taken the plan

E: if they do not consider age, then same diet on different aged people should have different results and not the same result. it does not solve the paradox

Bunuel
12 Days of Christmas 2024 - 2025 Competition with $40,000 of Prizes

Nutritionist: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets. However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

 


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for the 12 Days of Christmas Competition

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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 11:16
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Bunuel
12 Days of Christmas 2024 - 2025 Competition with $40,000 of Prizes

Nutritionist: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets. However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

 


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for the 12 Days of Christmas Competition

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Paradox : the weight loss success rates for both young adults and older adults on this new diet are nearly identical

This means older adults are putting in more efforts or are following the diet plan more seriously than younger adults are. Hence, we have to find an option that's inline with this pre-thinking.

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.

The reason that older adults generally struggle with weight loss is irrelevant to resolving the paradox. Hence, eliminate A.

(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.

Same as A. The information is not relevant to resolving the paradox. This information infact deepens the paradox.

(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.

This option gives us a reason to understand why older people, despite the fact they struggle with weight loss, had similar success rates as that of young adults. They were more serious in adhering to the diet. We can keep C.

(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.

The information is not relevant to resolving the paradox. Eliminate D.

(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

Same as A. The information is not relevant to resolving the paradox. This information infact deepens the paradox.

Option C
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 11:17
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(A) Provides an explanation for why older adults struggle with weight loss, but does not explain why the new plan works

(B) Does not explain why older adults on the high-protein diet have similar success rates

(C) Could help explain why older adults, who may have struggled with weight loss for years, are more committed to the diet as it suggests that determination, not age, is a key to success - Correct

(D) Does not explain why older adults are experiencing weight loss

(E) Does not address why the new diet works equally well for older adults
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 11:17
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On analzying each of the options from (A) to (E):

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
This statement highlights why older adults usually struggle with weight loss but does not explain why older and younger adults achieve similar results on the new diet. It restates the general difficulty without addressing the diet's impact. Eliminate.

(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
While this explains why younger adults might lose more weight on other diets, it does not clarify why the new diet eliminates this usual advantage, resulting in similar outcomes for both groups. Eliminate.

(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
This provides a plausible explanation: older adults, who are more likely to have struggled with weight for years, may adhere more strictly to the diet than younger adults. This stricter adherence could compensate for their slower metabolisms, leading to similar weight loss rates for both groups. We can keep this option for now.

(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
While this may explain who adopts the diet, it does not resolve why older adults achieve similar results as younger adults. Eliminate.

(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.
This suggests a flaw in most diet plans but does not explain why the new diet achieves comparable results for older and younger adults. Eliminate.

Hence the Correct Answer is option (C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 11:50
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The paradox is that despite older adults typically having a harder time losing weight, their weight loss success rates on this new diet are similar to those of younger adults.

To resolve this, let's check each option:

(A) reiterates that older adults have slower metabolisms but doesn't explain why their success rates match those of younger adults.
(B) highlights younger adults' physical activity but doesn't address why older adults still achieve similar results.
(C) directly explains the observed phenomenon. If older adults are more motivated to strictly follow the new diet because of long-standing struggles with weight, this could help them achieve similar results to younger adults. This adherence could explain why the expected disparity between the two age groups' weight loss success is not observed.
(D) discusses the marketing of the diet but doesn't explain the success parity between age groups.
(E) mentions age-related metabolic changes but doesn't clarify why older adults are as successful as younger ones on this specific diet.

Thus, (C) resolves the paradox.
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 11:57
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(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.

This restates the general assumption about older adults but does not explain why they perform equally well as younger adults on this specific high-protein diet.
Does not resolve the paradox.
Eliminate.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.

While this is true in general, it does not explain why older adults perform as well as younger adults. If anything, this would reinforce the expectation that older adults would lose less weight.
Does not resolve the paradox.
Eliminate.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.

This provides a plausible explanation. Older adults, having struggled with weight loss longer, may be more motivated to strictly follow the high-protein diet, offsetting their natural metabolic disadvantage.
Helps resolve the paradox.
Keep.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.

This explains the target audience for the diet but does not address why older adults perform equally well as younger adults.
Irrelevant to the paradox.
Eliminate.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

While this highlights a potential flaw in other diet plans, it does not explain why older adults on this particular high-protein diet achieve similar success to younger adults.
Does not resolve the paradox.
Eliminate.

Ans C
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 12:12
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Bunuel
12 Days of Christmas 2024 - 2025 Competition with $40,000 of Prizes

Nutritionist: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets. However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

 


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(A) Does not explain why older adults are losing weight similarly to younger adults. (Eliminate).
(B) Doesn’t address why older adults have similar success rates despite their slower metabolism. (Eliminate).
(C) Explains that older adults may adhere more strictly to the diet due to their struggles, resolving the paradox. (Keep).
(D) Does not directly address why older adults lose weight successfully. Moreover, this is irrelavant(Eliminate).
(E) Talks about a general issue with diet plans, but doesn't explain the specific situation. OFS (Eliminate).


Hence IMO C
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 13:34
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Quote:
Nutritionist: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets. However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.
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A) if true, this would contradict the finding. This should lead to different success rate in young and old adults. WRONG

B) If true, this would lead to higher success rate in young adults which is not the case. WRONG

C) This would be true for young and old alike but would not explain the paradox where ideally old adults should have a lesser success rate according to their known struggle with weight loss WRONG

D) This option does not mention if the diet was only given to adults who are old or young. Since it was given to both groups, hence WRONG

E) CORRECT. since the belief was based on historical anecdotes where the diets might not have accounted for the metabolic changes that come with old age. This explains the paradox as the current diet might have made the necessary changes to yield the results.
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 13:47
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(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
- Eliminate. This just explains the premise.

(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
- Eliminate. Still doesn't clary why older adults are able to lose weight.

(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
-Keep. Resolves paradox, as the older adults generally face difficulties in loosing weights ,could be adhering to the new diet.

(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
- Eliminate. Doesn't clarify regarding old vs young.

(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.
- Out of scope.

IMO C
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 14:12
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A. Incorrect does not address the paradox
B. Incorrect. It does not address the paradox in question
C. Correct. Provides a reason why the success rate is identical
D. Incorrect. Out of scope
E. Incorrect. Irrelevant to the paradox
Bunuel
12 Days of Christmas 2024 - 2025 Competition with $40,000 of Prizes

Nutritionist: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets. However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

 


This question was provided by GMAT Club
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 14:14
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My analysis:

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
- This restates the general difficulty older adults face with weight loss but does not explain why their success rates on the new diet are comparable to younger adults.
- Does not resolve the paradox.

(B)Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
- This highlights a difference between younger and older adults but does not explain why their weight loss success rates on this specific diet are similar.
- Does not resolve the paradox.

(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
- This suggests that older adults, who are more likely to have struggled with weight for a long time, may adhere more strictly to the new diet, compensating for their slower metabolism.
- Helps resolve the paradox.

(D)The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
- This explains who the diet targets but does not address why older adults achieve similar weight loss results as younger adults.
- Irrelevant to the paradox.

(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.
- This highlights a limitation of most diet plans but does not explain why the new diet results in similar success rates across age groups.
- Does not resolve the paradox
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 14:27
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(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
It says older the people, more strictly they'll follow the diet.

Bunuel
12 Days of Christmas 2024 - 2025 Competition with $40,000 of Prizes

Nutritionist: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets. However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

 


This question was provided by GMAT Club
for the 12 Days of Christmas Competition

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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 16:41
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Bunuel
12 Days of Christmas 2024 - 2025 Competition with $40,000 of Prizes

Nutritionist: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets. However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

 


This question was provided by GMAT Club
for the 12 Days of Christmas Competition

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A. Incorrect answer. If that is the case, then they should be struggling with weight loss which is not the situation here.
B. Incorrect answer. In this case, the success rate for younger adults should be higher, but it is identical as per the survey.
C. Correct. Since the paradox mentions that despite the age difference, the weight loss is identical, the only logical answer that resolves the paradox is that everyone adheres strictly to the new diet recommendations irrespective of age.
D. Incorrect answer. Out of scope.
E. Incorrect answer. If they do not consider age related metabolic changes when calculating recommended intake then the diet plan should only be effective for one set of people following it.
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 18:16
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The Paradox:
  • New High-Protein Diet: Helps people lose more weight than traditional diets.
  • Issue: More older adults are on this diet, and they usually find it harder to lose weight.
  • Observation: Despite having more older adults, both young and older adults lose about the same amount of weight on this diet.
Why is This a Puzzle?
You’d expect older adults to lose less weight, but they’re losing just as much as younger adults. Something must be balancing it out.
Looking at the Options:
  • Option (C): People who have struggled with weight are likelier to stick to the diet.
    Why This Works:
    • If older adults have tried many diets and are sticking strictly to the new high-protein diet, their commitment can compensate for their slower metabolism.
    • Although older adults usually lose less weight, their strong commitment helps them lose just as much as younger, more active adults.


Answer:
C. Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 18:34
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Answer is E.

Paradox: Older adults generally struggle with weight loss, but this high-protein diet plan has more older adults than other plans and still sees similar success rates for older and young adults.

Potential resolutions for paradox: Reasons that make this plan different from others for people of different ages, reasons why this plan might be more effective for older adults.

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan. Incorrect because this is a restatement of a given premise.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan. Incorrect because this premise supports the given premise of older people struggling more with weight loss than young people.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations. Incorrect because passage does not reference behavioral tendencies by individuals going on diet plans.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting. Incorrect because passage does not reference whether the individuals on the new high-protein diet plan have a history of structured dieting or not.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes. Correct because helps address why older adults might not see as much success with traditional diets, but shows how the new high-protein diet plan might be different from traditional diets by considering age-related metabolic changes and thus producing better success rates for older and young adults alike.
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 19:20
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Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.

New information, and also not resolving the paradox.

(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.

New information, and also not resolving the paradox.

(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.

Individuals who struggle for many years imply that these individuals must be older, and also they will strictly follow the diet recommendations.
This option implies that older people will strictly follow the diet recommendation, and hence can get better results.

Looks Good.

(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.

New information, and marketed toward individuals who have not previously tried structured dieting, but we don't know whether these individuals are old or not.

(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.
This implies that the diet plan doesn't consider age-related metabolic changes, so what?

Hence, C is the suitable answer.
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 20:26
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P1: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets.
P2: However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
so it will increase the paradox, with the slow metabolism how olds are having the same weight loss as of the Youngs (eliminate)

(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
this is increasing the paradox, as if young adults are more physically active then Youngs should have definitely higher rate than olds eliminate


(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.

question mentioned it that old people struggled with their weight reduction for longer than younger people
and as old are strict to their diets that explains the better results for old people
(answer)

(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
we are not concern about marketing (eliminate)

(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.
Totally Irreverent
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 22:08
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Bunuel
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Nutritionist: Recent surveys indicate that people following our new high-protein diet plan tend to lose more weight than those on traditional diets. However, despite having a higher proportion of older adults who generally struggle with weight loss, the weight loss success rates for both young adults and older adults on this new diet are nearly identical.

Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.

 


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Logically, old adults is relatively difficult to weight loss than young adults, but the weight loss success rate is almost the same.
So we have to find out the reason of either
(1) Reason reduce weight loss successful rate of young adults or
(2) Reason increase weight loss successful rate of older adults

(A) Reduce the successful rate weight loss successful rate of older adults (x)
(B) Increase the successful rate weight loss successful rate of young adults (x)
(C) The older adult struggle with weight loss and they tend to adhere strictly to new diet recommendations, it increase increase weight loss successful rate of older adults (v)
(D) Structured dieting may applicable to young and older adults to isolate successful rate (x)
(E) Not consider age-related metabolic change does not help explain the weight loss success rate (x)

Therefore the answer is C
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 23:10
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Which of the following, if true, most helps to resolve the apparent paradox?

(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
This only explains the premise "older adults who generally struggle with weight loss ", not the paradox

(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
This only explains the premise "older adults who generally struggle with weight loss ", not the paradox

(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations.
This is the right answer for the paradox

(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
Irrelevant with "structured dieting"

(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.
May explain the premise but not the paradox.
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12 Days of Christmas GMAT Competition - Day 7: Nutritionist: Recent 24 Dec 2024, 23:44
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(A) Older adults generally have slower metabolisms and hence find it more difficult to lose weight regardless of diet plan.
Reason is out of context
(B) Younger adults tend to be more physically active, which can enhance the effectiveness of any diet plan.
opposite choice
(C) Individuals who feel they have struggled significantly with weight for many years are more likely to adhere strictly to new diet recommendations. Correct. older people followed the plan strictly & hence gained more success.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
out of context
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes. reason is not required

Answer C
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