Are you just asking questions, or are you asking some one to write an essay for you?
A, because your peers are are the people are you are friends/go to school with, and pressure will influence your behaviors
I believe the correct answer is B. It is the only sentence where the punctuation marks are correctly placed. For the first sentence, the apostrophe in Dorris should be placed in the last letter of the name and an s is not to be added since the name ends with an s. For option C, some commas should be inserted in the sentence to make sense of the sentence. And, for the last option, the semi colon is not to be used instead a period should be placed.