What types of changes does a woman's body experience during pregnancy?

During pregnancy, a woman's body undergoes significant physical and hormonal changes that are crucial for supporting the developing fetus and preparing for childbirth. The physical changes may include weight gain, the growth of the abdomen, changes in breast tissue, and increased blood volume. These adjustments are essential to accommodate the growing baby and to ensure proper nourishment and oxygen supply.

Hormonal changes are also vital during pregnancy. Levels of hormones such as progesterone and estrogen rise substantially, which helps maintain the pregnancy, regulate other hormonal functions, and prepare the body for labor. These hormonal shifts can also lead to additional physiological changes, including alterations in skin condition, digestive processes, and even metabolism.

This comprehensive understanding of how both physical and hormonal aspects interplay makes it clear that option B accurately captures the two primary types of changes experienced by a woman during pregnancy. The other options may touch upon important aspects of pregnancy but do not encompass the full scope of the physiological transformations that occur.