Question

which of the following is not included in the first trimester? a. heart begins beating b. arm and leg buds appear c. umbilical cord develops d. eyes and brain complete formation

Explanation:

In the first trimester of pregnancy, the heart begins beating, arm and leg buds appear, and the umbilical cord develops. However, eyes and brain do not complete formation in the first trimester. They continue to develop throughout pregnancy.

Answer:

D. eyes and brain complete formation