Biology

The correct answer is: A.Amazonian frogs

Explanation:

Sympatric speciation occurs when new species arise from a single population in the same geographic area without physical barriers. In the case of Amazonian frogs, different species have evolved in the same region but are reproductively isolated due to factors like differences in mating calls, breeding seasons, or microhabitats. Even though they live in the same area, they do not interbreed, leading to speciation.

The other examples are more associated with o...