You Are Observing Children on an Elementary School Playground

Multiple Choice

You are observing children on an elementary school playground. Why might you find some girls playing sports with boys, but almost no boys playing jump rope with girls?

A) Children are mocked by their peers for crossing gender lines, and boys are mocked more than girls.
B) Boys develop more slowly than girls and, therefore, they tend to not be good at jumping rope when they're in elementary school.
C) Boys are more naturally suited for the physical competition of sports, whereas girls excel at the sort of cooperation that goes into activities like jumping rope.
D) Parents have instructed their children to avoid any cross-gender playground activities because they fear that it will lead to their children being labeled "abnormal."