D.) Diction refers to the choice of words with specific meaning , or connotations that helps the author to communicate his or her tone
The only correct option here is B. tragedy exposes negative emotions and fears. A is incorrect because this refers to comedy, not tragedy. C is incorrect because tragedies are usually sad throughout - there isn't much happiness there. D is incorrect because it almost never ends well. This leaves us with B as the correct option, given that tragedies are usually quite dreary and sad, with a lot of negativity.
The answer is B. verb, because mopped= <span>clean or soak up (something) by wiping. It's an action.</span>
You have to tell us which words are underlined, but I have a feeling the words were "a popular author of children's books." which is an appositive. Author is the same thing as Shel Silverstein.