Question

which two body systems help control hormone levels to prepare the body for pregnancy? immune and digestive; endocrine and reproductive; skeletal and circulatory; reproductive and immune

Explanation:

To determine the two body systems controlling hormone levels for pregnancy, we analyze each option:

• Immune and digestive: Immune fights infections, digestive processes food—neither controls hormones for pregnancy. Eliminate.
• Endocrine and reproductive: Endocrine system produces hormones (e.g., estrogen, progesterone) for pregnancy. Reproductive system (uterus, ovaries) works with hormones to prepare for pregnancy. This fits.
• Skeletal and circulatory: Skeletal supports structure, circulatory transports blood—unrelated to hormone control for pregnancy. Eliminate.
• Reproductive and immune: Immune’s role is not hormone control for pregnancy. Eliminate.

Answer:

B. endocrine and reproductive