Considering the roles of estrogen and progesterone in the female reproductive cycle, how would fertility be affected if a woman had a hormonal disorder involving a constant high secretion of progesterone?
A. Fertility would be lower for the woman because progesterone directly inhibits sperm tail function.
B. The woman could become pregnant very easily after sexual intercourse if ovulation occurs because progesterone makes the cervical mucus waterier and easily penetrable by sperm.
C. The woman would have an easier time becoming pregnant because progesterone stimulates and controls ovulation, so the chances of fertilization at any point would be higher.
D. Pregnancy would not be easily achieved because progesterone makes uterine and cervical secretions too harsh for sperm survival and movement.
Answer: D
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