Genetic Variation Within Species Is Important to Conservation Because

Genetic variation within species is important to conservation because:

A) species with low genetic variation go extinct.
B) genetic variation provides material for natural selection to "act upon" in changing environments.
C) low levels of genetic variation may make hybrid species more likely, so neither species will go extinct.
D) high levels of genetic variation will result in more populations' speciating, so biodiversity will be maintained.