Source: Official Guide for the GMAT 13th Ed. Critical Reasoning; #23

2

# Which of the following, if true, would most

Which of the following, if true, would most strengthen the conclusion drawn by the researchers?

### 1 Explanation

1

Therese O

the question is basically asking to find a statement that supports the experts opinion that these birds pick up their nest building traits culturally rather than genetically. B) tells us that the birds learned to build their nests from watching their elders which tell us this is a learned trait and they were not born with it. the other statements are out of scope. D seems like a trap because it states the birds are located in one region and build nests differently and do not interact with each other. although this makes some sense that if they are the same species in the same area and still build nests differently then they must have learned it from their population however, the prompt specifaclly spoke about Male birds. so B is best.

May 15, 2016 • Comment

Cydney Seigerman, Magoosh Tutor

Thanks for sharing your analysis! :D