What is the answer i can’t figure this one out?

The Hardy-Weinberg Law has these 5 conditions:
-There must be no mutations.
-There must be no arriving (immigration) or leaving (emigration) of individuals to and from the population.
-The population must be large.
-All individuals must have the same chance of surviving.
-The matings of individuals organisms must be random; no meetings can have preferences.

So, in this case, your best choice would be *C, the populations must be infinitely large*