Which of the following examples best reflects selective breeding? a. The mating of two particular sheep to produce thicker wool

b. A genetic mutation in an individual snake that improves its sense of smell compared to others in its population

c. A few individuals of an extinct species live in zoos

d. Two wolf packs live in geographically separate regions

A The mating of two particular sheep to produce thicker wool

Explanation:

Selective breeding, also known as artificial selection, is the process in which people will choose two parent organisms to breed and create offspring with desired characteristics. In this case we want the sheep to breed and produce thicker wool.

b. the carbon cycle ensures living things have a source of hydrogen