Biology

The correct answer is: C.A disease that affects all individuals equally.

Explanation:

In a population with no selection, the frequency of alleles and genotypes will remain constant. If a disease affects all individuals equally (i.e., it does not preferentially affect individuals with certain alleles or genotypes), it would not disrupt the Hardy-Weinberg equilibrium because there is no differential survival or reproduction based on genotype.

The other options would disrupt Hardy-Weinberg equilibrium because they involve factors that can affect survival or reproduction in a non-random way, leading to changes in allele frequencies:

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