In a mouse population inhabiting a grassland area, a mutation occurs that results in a new coat color allele. Which of the following factors has the greatest effect on whether the new coat color will become more common in the mouse population?
a) whether abundant food is available in the grassland
b) whether the new coat color allele is dominant or recessive
c) whether the rate of reproduction in the mouse population is stable
d) whether the new coat color allele increases the survival of mice in their
environment