Question

which of the following is an example of reproductive isolation? two populations of finches that cannot produce viable offspring two populations of finches that have different feather colors two populations of salamanders that live in different lakes two populations of salamanders that have different tail lengths

Explanation:

Reproductive isolation occurs when two populations cannot interbreed to produce viable, fertile offspring. Different feather colors, living in different lakes, and different tail - lengths do not directly relate to reproductive isolation. Inability to produce viable offspring is a key sign of reproductive isolation.

Answer:

two populations of finches that cannot produce viable offspring