The school nurse presents a class on female reproduction to a group of junior high school girls. Which statement by a student after the class indicates a need for clarification of the teaching?
a) I understand that the menstrual cycle is controlled by hormones.
b) So, does every girl ovulate at the same time during the month?
c) The uterus is where the baby develops, right?
d) Girls start menstruating as soon as they hit puberty, correct?