Aresearcher observes two species of frogs in the same area. both species have a similar diet. one species breeds in fast-moving streams, while the other species breeds in ponds. both species are similar in appearance and have very similar dna. this is most likely an example of

geographical isolation.

habitat isolation.

behavioral isolation.

temporal isolation

Behavioral isolation.

Explanation:

SInce the example is saying that both species of frogs are in the same area, this eliminates the option of geographical and habitat isolation, since they are already togheter and have similar diet, appearence and DNA this means they could interbreed, and since the example is not saying anything about breeding times for each species, we can not assume this is a temporal isolation, so the only thing that sets them apart is the fact that they have different breeding rituals, since one species breeds on water ponds and the other in fast-moving streams, this is known as Behavioral Isolation, since it´s their breeding rituals that keeps them from interbreeding.

the correct answer is:

a population changes in response to a change in the environment.

me and my friend did 2