URGENT! THIS IS A TEST, CANT FAIL!!!!
Part of a population of South American finches is blown by a storm
onto an island far offshore and manages to survive and reproduce
there for a period of 10,000 years. After that period, a climate
change results in lower sea levels and the reconnection of the island
with the mainland. Members of the formerly isolated island finch
population can now interact freely with members of the original
mainland population.
Which of the following observations would be the best evidence that
the island and mainland finch populations had evolved into two
different species?

Select one:

O Individuals from the different populations seem to mate with each
other, and their offspring successfully mate with either island
birds or mainland birds.

O Individuals from the different populations sometimes mate with
each other, but all of the resulting eggs don't produce offspring.

O Individuals from the different populations feed on the same kinds
of seeds in the same habitats and frequently direct courtship
behavior toward members of the other population.

O The island birds all have red feathers, but the mainland birds have only green feathers.