Step-by-step explanation:
The population must not have any natural selection is NOT a requirement for the population to maintain equilibrium according to Hardy-Weinberg principal. The Hardy-Weinberg principal states that a population will remain in genetic equilibrium as long as certain conditions are met, which include no mutations, random mating, a large population size, and no gene flow. Natural selection is not one of the conditions for the population to remain in equilibrium according to Hardy-Weinberg principle.