There are two different species of finch that live on the same small island, species A and
species B. Both species successfully feed and reproduce on the island. Species A nests in
pine trees and eats large seeds. Species B nests in hollowed-out dead logs and eats small
insects.

The factor most often acting as a selecting agent for the survival of a species in a particular location is the
(1) strength of the organism (3) speed of the organism
(2) new mutations within the individual (4) environment they inhabit