What is the correct answer choice and why?

Question

> Studies have shown that **people who keep daily diet records are far more successful at losing weight thanpeople who don’t keep track of what they eat**. Researchers believe that many weight-loss efforts fail becausepeople eat more calories than they intend to consume. One study followed a group of patients who reported thatthey could not lose weight when consuming only 1,200 calories a day. **The study found that the groupconsumed, on average, 47% more than it claimed and exercised 51% less**. In contrast, when dieters recordwhat they eat, their actual consumption more closely matches their reported consumption.The two boldface portions in the argument above are best described by which of the following statements?(A) The first is a conclusion reached by researchers; the second is evidence that that conclusion iscorrect.(B) The first is an explanation of why a certain theory is thought to be true; the second is an example ofresearch results that support this theory.(C) The first is an example illustrating the truth of a certain theory; the second is a competing theory.(D) The first is a premise upon which the researchers base their opinion; the second illustrates that theiropinion is correct.(E) The first introduces a theory that the researchers have disproved; the second is the basis for theresearchers’ argument.

Answer 1

The first is a conclusion reached by researchers, which is indicated by the words, "Studies have shown that...."

The other sentence, is evidence shown by citing the statistics of a specific study, indicated by "The study found that...."

Therefore, A is the correct answer.