Question

at what stage does the umbilical cord develop?
○ during the first trimester
○ during the second trimester
○ during ovulation
○ during fertilization

Explanation:

The umbilical cord develops during the first trimester of pregnancy. The first trimester includes early embryonic development where the placenta and umbilical cord form. Ovulation is the release of an egg, and fertilization is the union of sperm and egg; neither involves umbilical cord development. The second trimester is later in pregnancy, and the cord is already formed by then.

Answer:

A. during the first trimester