An Expert Was Invited to Campus to Discuss Current Research

An expert was invited to campus to discuss current research on population genetics. During the question and answer period, he was asked to comment on the importance of population genetics. What is he likely to say?

A) "It provides tools to control overpopulation."
B) "It allows researchers to map the karyotype."
C) "It is used to predict the occurrence of disorders."
D) "It is helpful in protecting species that are close to extinction."