darwins finches evolved on an island. what is the main reason that islands often provide good examples of…

darwins finches evolved on an island. what is the main reason that islands often provide good examples of evolution? they have many niches. they have many organisms that live on them. they allow for automatic biogeographic isolation. they allow for many variations to exist in species.
Answer
Answer:
They allow for automatic biogeographic isolation.
Brief Explanation:
Islands are geographically isolated, reducing gene - flow and promoting unique evolutionary paths.