Answer:
For number seven it's (I) and for 8 its (me)
Explanation:
A coordinating conjunction is used to link phrases, words, clauses, or sentences of equal rank. The coordinating conjunctions are for, and, nor, but, or, yet, and so. In the paragraph you have given above, sentence 4 and sentence 6 have used the coordinating conjunction "and". In your choices, Sentence 4 appears; thus, it's the best answer.
A. Sentence 4
Since diction in writing refers to the choice of words, the answer is A - strategic word choice used in persuasive rhetoric.