D, those two parts before and after the comma can be written as separate sentences<span />
Authors create tension in a story so the reader will be wondering what's going to happen, and might relate more to the story depending on where the tension is. If it's between two characters, or if the author will have one characters POV (point of view) about to have something really bad/good happen, and then change to a different POV so the reader keeps wondering what's going to happen, until it changes to the other POV again.
Faber gives Montag a seashell radio-like device in order to overhear Montag's conversations with Captain Beatty, so he can instruct him with what to say. Faber considers himself a coward.
