When it comes to adaptation, survival of a species' trait through artificial selection depends on a) which trait is the fittest for the environment b) which trait humans desire to reproduce c) which trait is the oldest for the species d) which trait has more abundance in the population

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Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.