13. Adaptive radiation is best described as the?
(A) existence of groups of closely related species recently evolved from different ancestors throughhybridization
(B) existence of individuals of closely related species that originated in different areas within diversehabitats, but that have rejoined as a single species
(C) existence of groups of closely related species recently evolved from a common ancestor
(D) existence of groups of distantly related species recently evolved from a common ancestor4