Answer: In this example: Some moths on a tree are easier to see due to their lighter color and therefore are eaten by predators more often, the Hardy-Weinberg assumption violated was NO SELECTION because the moths that were eaten by the predators were being selected due to their lighter color.
Explanation: In selection, genotypes from mutation and recombination express differential survival and reproduction. "Most fit" in a selection refers to genotype or phenotype with greater average reproductive output over its lifespan than other genotypes or phenotypes. It depends on place, time, environmental conditions as well as genetics.