Paragraph of the most important reason for having a baby

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

Which evaluation category receives the highest rating? which evaluation category receives the lowest rating?

What is the meaning of the word "caches" as it is used in paragraph 6