Question

a population of elephants becomes too large, and several members leave the population. what is this process called?
death rate
immigration
emigration
births

Explanation:

Emigration is when individuals leave a population. In this case, elephants are leaving the population due to it being too large. Death rate refers to number of deaths, immigration is entry into a population, and births are new individuals added to a population.

Answer:

C. emigration