Biology

The correct answer is: C.extremely large population size.

Explanation:

One of the assumptions of Hardy-Weinberg equilibrium is that the population is extremely large. This condition is meant to minimize the effects of genetic drift, which is a random fluctuation of allele frequencies. In small populations, genetic drift has a more pronounced effect, leading to deviations from Hardy-Weinberg equilibrium. If a population is suffering from genetic drift, it means the population is likely not large enough, which directly violates the assumption of having an extremely large population size.

The other conditions ...