Final answer:
False. Girls are not typically fertile immediately after their first menstrual period. It takes time for a girl's menstrual cycle to become regular and for ovulation to occur.
Step-by-step explanation:
False. Girls are not typically fertile immediately after their first menstrual period. It takes time for a girl's menstrual cycle to become regular and for ovulation to occur. Ovulation is the release of an egg from the ovary, and it usually happens about midway through the menstrual cycle. It is only after ovulation that a girl can become fertile and potentially conceive a child.