Which statement is a specific example of how artificial selection is used in society?

A.

The nucleus of a cow's skin cell is inserted into an egg cell from a female cow.

B.

Genes are spliced from a bacterial cell and inserted into a cell of an apple tree.

C.

Pesticides applied to beetles yield a pesticide-resistant population of beetles.

D.

Two racehorses with desirable traits are bred to produce a superior racing horse

D. Two racehorses with desirable traits are bred to produce a superior racing horse.