1. In the passage, the author is primarily interested in
(A) proposing a solution to a health problem.
(B) recommending a particular nutritional plan.
(C) discrediting an erroneous belief.
(D) evaluating the benefits of a dietary regimen.
(E) criticizing the shortcomings of modern diets.
Correct Answer - C
Explanation - as mentioned in the passage: "“Paleo diet,” are premised on the dubious assumption that increased consumption of meat and meat by-products pose minimal health risks to the human (5) body.Proponents of such diets correctly observe that cholesterol intake does not directly correlate with the concentration of harmful low-density lipoprotein (LDL) cholesterol particles in the blood plasma. Studies show, however, that cholesterol intake exacerbates the negative (10) effect of saturated fatty acids on LDL concentrations, thus increasing LDL levels indirectly. ", and so further on author takes up this wrong/partially correct belief and presents various observations, which actually try to discredit the proponents's observations.
Option A, B - incorrect, as author proposes no solution, or any nutritional plan, the passage is just about an incorrect belief, and proofs discrediting it.
Option D - incorrect, no benefits have been realised.
Option E - incorrect, but close enough, as the author doesnt seem to be criticizing the shortcomings, he just discusses the belief held by proponents, and why its wrong.
2. Which one of the following most accurately states the main point of the passage?
(A) Increased consumption of meat and meat by-products may be harmful to one’s health.
(B) Cholesterol intake can exacerbate the negative effects of saturated fatty acids on LDL concentrations.
(C) Most diets are not as healthful as their proponents are led to believe.
(D) Although cholesterol intake is not directly responsible for increasing the concentration of LDL particles in the blood plasma, it can cause such an increase indirectly.
(E) The healthiest diets are those that eliminate meat and meat by-products.
Correct Answer - C
Explanation - as mentioned in the passage: "Many of the most popular diets today, including the so-called “Paleo diet,” are premised on the dubious assumption that increased consumption of meat and meat by-products pose minimal health risks to the human(5) body. "
and further on also, the passage, the proponents believe that cholesterol in such diets doesnt increase the LDL, which is correct, however, further, we can see author, discrediting this belief. So the main point to take from the passage is: option C.
Option A, E - incorrect, true, but not the main point, as cannot be directly inferred from the passage.
Option B,D - incorrect, true, but just an argument to support the main point of the passage.
3. Which one of the following most accurately describes the role played in the argument by the claim that cholesterol intake does not directly correlate with the concentration of harmful low-density lipoprotein (lines 6-8)?
(A) It is a claim on which the argument depends but for which no support is given.
(B) It is used to refute the causal explanation described by the conclusion of the argument.
(C) It summarizes a position that the argument as a whole is directed toward discrediting.
(D) It acknowledges a possible objection to the recommendation put forth in the argument.
(E) It is a proposition for which the argument seeks to advance a causal explanation.
Correct Answer - C
Explanation - Its the best option that explains the claim, the author throughout the passage, explains, why the belief held by proponents of most mordern, diets is only partially correct, since they dont see the indirect negative effects of cholesterol on health.
Option A - incorrect, as a support is not needed as the author mentions that they are not wrong in their belief.
Option B - incorrect, not to refute the casual explanation but to continue the argument further to conclusion.
Option D - incorrect, it is the objection.
Option E - incorrect, as not related to what's asked.
4. Which one of the following, if true, would most strengthen the proponents’ argument that increased consumption of meat and meat by-products pose minimal health risks to the human body?
(A) Excessive consumption of salt, often found in meat by-products, is associated with increased risk of cardiovascular disease.
(B) Some animal fat contains large amounts of omega-3 fatty acids, which mitigate the ill effects of increased LDL concentrations.
(C) Of all plant-based diets, those that exclude meat and meat by-products are the most protective against atherosclerosis.
(D) Drugs that lower cholesterol levels can also prevent cardiovascular disease, but carry the risk of adverse side effects.
(E) Antioxidants and dietary fiber are not the only substances that can prevent oxidative modification of LDL.
Correct Answer - B
Explanation - if B is true, it would imply that the directly or indirectly, whatever be the effects of cholesterol on the concentration of LDL is getting reduced, so that would mean that there is no harm in consuming increased meat products.
Option A,D - incorrect, as it would not help in strengthening the argrument by the proponents.
Option B,E - incorrect, as are irrelevant to what's asked.