Question

which of the following hormones is/are needed for breast development?
a estrogen
b prolactin
c progesterone
d both estrogen and progesterone

Explanation:

• Estrogen promotes the growth of breast ducts.
• Progesterone is involved in the development of lobules and alveoli in the breast.
• Prolactin is mainly for milk production after childbirth, not the main hormone for breast development.

Answer:

D. Both estrogen and progesterone