The correct answer is B. The river deposited debris at every turn. There is a verb, a subject and an object, so it is considered a full sentence.
Answer:
The plots of dystopian novels can be amazing. A group of teens in Holland, Mich., tells me about some of their favorites: In Delirium by Lauren ...
Explanation:
A. a proper noun is usually more specific than a common noun
The sentence would be a compound sentence, I believe.