Which statements describe changes in breast size and appearance during pregnancy? Select all that apply.

The correct statement emphasizes that breast changes during pregnancy result from the secretion of estrogen and progesterone. These hormones play vital roles in preparing the body for lactation and nourishing the developing fetus. Estrogen promotes ductal development, while progesterone stimulates the growth of glandular tissue. As a result, the breasts undergo significant changes in size, shape, and sensitivity in anticipation of producing milk and supporting breastfeeding.

The other options do not accurately capture the complexity of these changes. While increased blood flow does contribute to the changes, it is not the sole factor; hormonal influences are crucial. The blue network of blood vessels visible beneath the skin is indeed a physical change that occurs due to hormonal effects, but it is not the only change associated with pregnancy. The statement that the changes are unrelated to hormonal changes is incorrect, as the entire process is significantly driven by hormonal fluctuations throughout pregnancy.