It should be puberty because once a female starts her menstrual cycle she is able to become pregnant. The same should go for guys when it comes to their sperm becoming "active" in other words
Answer:
I believe it is cardiovascular since they all involve the heart
It strengthens your bones to be able to handle large amounts of pressure and weight on your body. I know this isn't related, but when a person breaks their ankle or something else they tend to heal quicker because they're athletes. So one way or another, increasing strength, helps to increase your capacity for exercising.
ANSWER: TRADITIONAL PERIODIZATION
EXPLANATION: The above illustration where there is reduction in the percentage of one-repitition maximum (1RM) as the day of the training advance, is basically a traditional periodization method.
Thus, the athletes completed task gradually increases over the course of the training cycle. Hence, a decrease in volume is experienced as a result of increase in the load over time.