What is the function of the hormone progesterone?
a. preparation of the body for maintaining pregnancy
b. development of male secondary sex characteristics
c. development of female secondary sex characteristics
d. preparation of the fallopian tube for fertilization

A. Preparation of the body for maintaining pregnancy.

Progesterone hormone is mainly released by ovary. It is specifically released by corpus luteum. Corpus luteum is a dead follicle, formed after ovulation in the second half of the menstrual cycle.  

Progesterone stimulates the growth of the endometrium, which is a lining of the uterus. Thickening of endometrium lining allows the implantation of the fertilized egg, which results in pregnancy. It is maintained high throughout pregnancy.

Thus, it prepares the body for maintaining pregnancy.

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explanation:

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.