Compare and contrast arthur and norma, how are they different and alike ?

What is the best revision of this statement from the body of a cover letter?

Bella is going to write a research paper. she chose sports as her topic, but her teacher said she must narrow or limit her topic. choose the topic that limits the broad topic of sports the most. a) a history of sports in the united states b) a history of tennis c) rules and etiquette of tennis d) training and equipment for outdoor sports

Respond for free points because i don't have a question anymore.