The correct answer is D. 9 months.
A human gestation period is the time between conception and birth. It is typically 38 weeks, or 9 months, from the first day of the last menstrual period (LMP). However, it can range from 37 to 42 weeks.
The first trimester of pregnancy lasts from week 1 to week 12. During this time, the embryo develops into a fetus. The major organs and systems of the body are formed, and the fetus begins to grow rapidly.
The second trimester of pregnancy lasts from week 13 to week 26. During this time, the fetus continues to grow and develop. The mother’s body also changes significantly, as she prepares for the birth of her child.
The third trimester of pregnancy lasts from week 27 to week 40. During this time, the fetus continues to grow and develop. The mother’s body also continues to change, as she prepares for the birth of her child.
At the end of the third trimester, the fetus is typically ready to be born. The mother’s body goes into labor, and the baby is delivered.
The gestation period of a human is typically 9 months, but it can range from 37 to 42 weeks.