New Mutations That Arise Within a Population Are Typically Lost

Multiple Choice

New mutations that arise within a population are typically lost primarily do to

A) most mutations occur in individuals that are exposed to environmental mutagens and they therefore experience mutations in many different genes which means that they do not survive to reproduce.
B) most mutations are lethal.
C) new mutations all result in a lower reproductive fitness.
D) populations are of a finite size and new mutations are frequently lost by genetic drift.