Final answer:
Artificial selection is a process where organisms with desired traits are bred intentionally by humans. It is used by breeders and farmers and has been employed for domesticating animals and plants. However, individuals selected in artificial selection are not necessarily the best adapted for their environment.
Step-by-step explanation:
Artificial selection, also known as selective breeding, is a process in which humans intentionally breed organisms with desired traits to produce offspring with those traits. It is commonly used by breeders and farmers to improve certain characteristics in plants and animals. Additionally, artificial selection has been used historically to domesticate animals and plants, making statement C true. However, statement D is not true because in artificial selection, individuals are selected based on human preferences, not necessarily because they are best adapted for their environment.