anceer wrote:
Several studies have shown that individuals who dine frequently at fast-food restaurants are more likely to be obese than people who rarely eat at such establishments. In a recent examination of body-perception, health psychologists conducted a survey targeting two groups: high- and low-frequency fast-food eaters. To their surprise, the investigators found that approximately 75% of both groups rated themselves as "at a healthy weight."
Which of the following would best explain this finding?
A Many of the high-frequency fast-food eaters were at a healthy weight at the time of the survey.
B The range of weights among the low-frequency fast-food eaters was higher than the weight-range for the high-frequency fast-food eaters.
C Most individuals rate themselves on surveys as being healthy.
D The individuals in the high-frequency fast-food group ate at a variety of restaurants including table-service establishments.
E Many of the high-frequency fast-food eaters had engaged in some form of exercise during the past year.
Official Explanation:
Fact 1: Individuals who dine frequently at fast-food restaurants are more likely to be obese than people who rarely eat at such establishments.
Fact 2: In an examination of body-perception, investigators found that approximately 75% of both high-frequency and low-frequency fast-food eaters rated themselves as "at a healthy weight."
This is a Resolve/Explain question, as evidenced by the phrase Which of the following would best explain this finding. The fact that individuals who dine frequently at fast-food restaurants are more likely to be obese than people who rarely eat at such establishments should be reflected in the diners’ body-perception. However, 75% of both groups rated themselves as "at a healthy weight."
For an answer choice to explain the discrepancy, it must provide a reason that 75% of both groups rated themselves as "at a healthy weight." Evaluate the answer choices, looking for one that reflects this idea.
Choice A: No. This choice that states Many of the high-frequency fast-food eaters were at a healthy weight at the time of the survey is out of scope. This does not necessarily explain why 75%...rated themselves as "at a healthy weight,” because many is an indeterminate number that may indicate a minority.
Choice B: No. The fact that The range of weights among the low-frequency fast-food eaters was higher is out of scope. This does not explain why 75% of both groups rated themselves as "at a healthy weight."
Choice C: Correct. If Most individuals rate themselves on surveys as being healthy, then this explains why 75% of both groups rated themselves as "at a healthy weight” despite the fact that individuals who dine frequently at fast-food restaurants are more likely to be obese than people who rarely eat at such establishments.
Choice D: No. The fact that The individuals in the high-frequency fast-food group ate at a variety of restaurants is out of scope. This does not explain why 75% of both groups rated themselves as "at a healthy weight."
Choice E: No. Exercise is out of scope. According to the passage, they are still likely to be obese. This answer choice does not explain why 75% of both groups rated themselves as "at a healthy weight."
The correct answer is choice C.