Reverse evolution:
Reverse evolution refers to backward evolution where the ancestor trait reappears back after many years.
Artificial selection:
Artificial selection is the breeding of plants and animals by man (using animal husbandry and plant breeding programs) to obtain offspring with the desirable traits.
Mutation:
Mutation is the sudden inheritable change in the genetic material of an organism.
Natural selection:
Natural selection is the process where organisms that are better adapted to the environment survive and reproduce.
Final answer:
b. artificial selection