Elementary students are not allowed to talk while the teacher reads aloud after lunch.
Ethos is using credibility to persuade someone like using a celebrity or scientist.
Pathos is using material that produces strong emotions one way or the other
Logos is using statistics and facts to persuade one way or the other.
Propaganda uses at least one or all three of these. It is material used to promote a political side, event, or point of view.
I believe it is C, though I am not entirely sure. A compound sentence is two separate sentences combined with a conjunction, so I'm pretty sure that's correct.