The hardy-weinberg principle is that genetic frequencies in a
a. will remain stable from generation to generation.
b. will always be changing.
c. will not be affected by environmental changes.
d. are always in a 3: 1 ratio

A. Will remain stable from generation to generation.

Explanation:

The Hardy-Weinberg Principle tells us that the genetic frequency or genetic composition of a population will be kept in balance (will remain stable) from generation to generation as long as natural selection or a phenomenon that causes a mutation does not act.

To maintain that balance the necessary condition is that there is no migration, that the mating is random, that the population is large enough and that there is no mutation or selection.