Final answer:
The average full-term infant is born after 38 weeks of gestation.
Step-by-step explanation:
The correct statement about pregnancy is b) The average full-term infant is born after 38 weeks of gestation.
During pregnancy, the period of gestation is divided into three trimesters of about three months each. The average duration of pregnancy is 40 weeks from the first day of the last menstrual period, but full-term birth usually occurs after 38 weeks of gestation.