Researchers Have Been Studying a Rare Population of 87 Voles

Researchers have been studying a rare population of 87 voles in an isolated area. Ten voles from a larger population were added to this isolated population. Besides having ten additional animals, what benefits are there to importing individuals?

A) There is no benefit other than increasing the overall population size.
B) Additional voles will strengthen competition and increase the survival of the fittest.
C) Additional animals would increase beneficial genetic drift.
D) Additional voles from a distant population will likely increase genetic diversity and reduce inbreeding.