C
The apparent paradox in the nutritionist's observation is that older adults on the new high-protein diet lose weight at the same rate as younger adults, despite older adults generally struggling more with weight loss.
To resolve this paradox, we need a reason why older adults on this specific diet achieve similar success rates to younger adults.
(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 older adults on the new diet are losing weight as successfully as 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.
While this may explain why younger adults generally lose more weight, it does not explain why older adults on this diet are achieving comparable results.
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 may have struggled with weight longer, are adhering more strictly to the new diet plan.
Greater adherence could explain why older adults are losing weight at the same rate as younger adults, despite their usual challenges with weight loss.
Resolves the paradox.
(D) The new high-protein diet plan was primarily marketed towards individuals who have not previously tried structured dieting.
While this may explain the target audience of the diet, it does not address why older adults are achieving results similar to younger adults.
Does not resolve the paradox.
(E) Most diet plans do not consider age-related metabolic changes when calculating recommended food intakes.
This provides a critique of other diet plans but does not explain why the high-protein diet plan is equally effective for both younger and older adults.
Does not resolve the paradox.
Hence C helps resolve the paradox
Bunuel
12 Days of Christmas 2024 - 2025 Competition with $40,000 of PrizesNutritionist: 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.