- Posts: 40
- Joined: May 19, 2016
I was able to summarize the the stim with: bird and reptile species use hissing as threat device against predators, the way they produce the hissing sounds is similar enough that the behavior developed in common ancestor. The common ancestor would have lived, but its predators would have not acquired the anatomy to hear their hissing sounds.
The gap I see is predators hear the hissing sounds from bird and reptiles, while predators of common ancestor do not hear their sounds.
I picked E as my answer, with the initial thought process of : if the common ancestor had few predators then would not be able to hear as in comparison to the predators of birds and reptiles. But now I can see why E is an incorrect answer choice b/c in the stim it says 'none of predators'
I just can't see how C resolves the information.