Expository writing is meant to inform a reader about a certain topic. Because of this, D is the correct answer.
This sentence is messy, as well as a run-on. Here's a revised version:
"It becomes easy to gossip among the office, but remember; it is just as easy to keep it a secret!"
There is proper punctuation added to make it easier to read. It also adds personality and emotion to the sentence. Try reading the two aloud and compare them. You can make changes to it if you feel it necessary.
Shakespeare's intention was not to make Shylock a tragic figure; instead, Shylock was meant to function as a man who could be vividly realized as the epitome of selfishness; he must be defeated in this romantic comedy. In a sense, it is Shakespeare's own brilliance which led him to create Shylock as almost too human. Shylock is powerfully drawn, perhaps too powerfully for this comedy, but his superb dignity is admirable, despite the fact that we must finally condemn him.