Why would a finch population that lives on an island have a higher rate of speciation than a finch population that lived in a large forest in north america?
a. the island finches have higher genetic drift.
b. the island finches have more spatial isolation.
c. the island finches have more behavioral isolation.
d. the island finches will mutate more frequently.

The answer is B. The island finches have more spatial isolation.

The island finches are more spatially isolated than the large forest finches. Thus, gene pool on the island is more limited regarding the genetic possibilities. For that reason, the island finches will have more geneflow. So, it is a greater possibility for them to pass on some specialized traits to the next generation. This will result in a higher rate of speciation of the island finches than the large forest one.