- A 9 months (38-40 weeks)
- B 6 months, roughly two trimesters
- C 12 months, a full calendar year
- D 4 months, about one trimester
Correct answer: A. 9 months (38-40 weeks)
Explanation: Human gestation is approximately 38-40 weeks (about 9 months) from fertilization to birth. It is divided into three trimesters of about 3 months each.
Concept context
Male and female reproductive systems, gametogenesis, fertilization, implantation, pregnancy, and reproductive health.