A population of mice lives on an island in the Pacific Ocean. From year to year, the size of the adult population remains at about 300 individuals, and the variety and frequency of the traits of the mice change very little.

Which of these events would be MOST likely to cause an evolutionary change to the mouse population on the island?

O A. an island predator killing and eating 50 mice.

O B. a storm that drowned about 50 mice all across the island.

O C. a mutation in the skin cells of an adult mouse.

O D. a drought that reduced and altered the food supply of the mice.

O E. a breeding pair of mice producing an unusually large number of offspring.