Q22 - In a recent study, a group

[noah]

The facts are that there were two groups. Group A added 25% more calories in the form of alcohol, while Group B kept their caloric intake the same, but replaced 25% of their intake from something like bread with alcohol. Surprisingly (at least to me), both groups gained weight - and the same amount. (Wouldn't you expect group A to gain more - remember the beer gut you grew in college?)

We're looking for something that is most strongly supported - an inference that might have a bit of wiggle room. (D) is strongly supported since the weight that the people gained doesn't seem to be about the calories consumed, since if it did, Group A would surely have gained more weight than Group B, since Group A increased their overall intake. It might be that it's because of the type of food that affects weight gain instead of the number of calories, but (D) sidesteps this issue by simply saying that the fat gain is "not dependent solely..." It doesn't commit to stating what the weight gain does depend on.

(A) is out of scope - we don't know the implications of a faster metabolization.
(B) is too broad - the primary cause?
(C) discusses the link between fat and weight, which is not at issue here.
(E) is very tempting, however it's actually contradicted by the facts. Group A, who added on alcohol calories, only added 20% to their diet (think about it, if someone eats 4000 calories per day and adds 25% more in the form of alcohol, he's adding 1000, which is 20% of the new total of 5000). Group B, had a higher proportion in alcohol calories (25% pure and simple) and it was not more significant, since that group gained the same amount of weight as Group A.

[xinyu520]

For this question, I am still a little bit confused. From my understanding, the second group also increased their total calorie intake by 25 percent with non-alcoholic sources right?

[snoopy]

For this question, I am still a little bit confused. From my understanding, the second group also increased their total calorie intake by 25 percent with non-alcoholic sources right?

No. The second group didn't change the number of calories they consumed. They switched out 25 percent of their normal daily caloric intake with alcohol. So, in the end, the second group still consumes the same amount of calories they did before but just replaced a part of their diet. The first group had their caloric intake increase.

[dreamer08D592]

does this question not have a percentage/number error because both the stimulus and the answer choice are talking about "increase"?