Which of the statements below about sexual selection is NOT correct?
a. Phenotypic differences often exist between the sexes. Most of the time, selection pressures lead to females with more conspicuous traits, such as bright colors.
b. Reproductive success in a female is often limited by the number of eggs she produces or the number of pregnancies she can carry.
c. Most of the time, females invest more resources in the offspring than the male.
d. Reproductive success in the male is usually determined by the number of his mates.