D. The narrator takes part in the new sport but blows a big play by breaking a rule
This is because once he breaks a rule, the others playing with him would make fun of him more and bully him because he doesn't know how to play. If he takes a part in a play, it won't affect his sport life. If he learns the sport and excels, then he would prove to them that he could play, but the question asks, what could he do to make it worse than it is now. C would be your best choice.