Which of the following factors renders a species more susceptible to disease and infertility?

The correct answer is this one: "B. inbreeding." Inbreeding renders a species more susceptible to disease and infertility. On the other hand, Large genetic diversity tends to be perceived as beneficial so that a single disease does not wipe out a species.

Here are the choices

A. Large genetic diversity

B. inbreeding

C. crossbreeding

D. recessive traits