Do you have answer choices, or is this an open-ended one?
Menstruation? Idk if that is right, but it sounds like someone started their period.
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There are five areas of health related fitness. They are heart and lung endurance or cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition. Heart and lung endurance or cardiovascular endurance is the ability to exercise the entire body for long periods of time.
Both B and C is the answer
