The answer is the letter a. Recessive traits- do not affect the Hardy-Weinberg equilibrium.
*Genetic drift, mutation, and natural selection are mechanisms that affect the allele frequencies in a population. If these events do occur, it alters the balance of the population's allele frequencies.
*The principle of Hardy-Weinberg equilibrium is that the genetic variation in a population will remain constant from one generation to the next. It is important that there is no presence of disturbing factors (for example natural selection, genetic drift, and mutation).