The correct answer is letter A, because Hyperlinks can be used although you have no internet connection. Using hyperlinks can be useful to jump to different parts of a text, but it doesn't mean that you will narrow your search for information.
Answer:
the best way to vary a sentence is to use prepositional phrase. this question is tricky, though, because it just says "identify a prepositional phrase" which is different from using one. Using compound sentences is a great way to vary the sentences in a paragraph, but again this deals only with one sentence. I hope this helped, and good luck man.