C is the only one that makes sense
it's not A because he has no eyes
it's not B because most of his knees aren't even there
it's not D because there is no ball
Mr. Raymond thinks this, because Scout and Dill have not yet been alive long enough to become corrupted and hateful. The adults in Maycomb have built up years of gossip and prejudices, but Raymond sees young children such as Scout and Dill as a type of clean slate, who can still be educated about the way others live, and can understand things differently than the others in town.
Independent clause, because this is a sentence formed by a group of words that can stand alone.
C.drew a coat over his shirt
The most immediate action Ivan Jakovlevitch does to show his propriety is to put on a coat. In this instance, we need to assume the coat is not a jacket you wear outside to ward off the cold, but rather part of a suit. By putting on the coat, he is dressing in a more proper and formal manner. He is following the social rules of the occasion. Propriety means to follow or conform to the social rules and behaviors of a situation.