Answer: the graph of the percentage Number of individual who has had sexual intercourse to age bracket
Explanation: this means that as we grow from child to adolescent, and from adolescent to young adult, our hunger for sex increase, and this is courses by the development in our sexual organs and exposure to sexual acts. As we grow up our chances of having sex also increase, as we often stay far from our parents, and we now have some means of income. The sex hormones also increase in the body as we grow up. This makes the graph of increase in age to sex directly proportional to each other.
From research in 2013 to 2017 40% of the number of people between 15-19 years in the U.S has had sexual intercourse, while 70% of the number of people between 19-24 years has had sexual intercourse.