The end of Hamlet's life held one purpose: to his father's murder. Unfortunately, this vengeance also cost him his own life, as well as the lives of Ophelia, Polonius, Laertes, and his mother Gertrude. We must try to remember Hamlet as he was before his father's death: a diligent student and a leader of his people. Towards the end, as a sickness began to consume him, he lost some of the presence he once had, but he never lost the support of his people. We can all take comfort in the fact the struggles in his mind are now at an end.
E. He wouldn’t readily reveal his feelings.
For this I would choose the first choice, A. "Eileen bought pants but not a new jacket."
A complex sentence is formed by an independent and a dependent clause. An independent clause is a part of a sentence that can still be a sentence on it's own. For example, "Eileen bought pants." could be a valid sentence.
A dependent clause is the opposite, and is a part of a sentence that can not still be a sentence on it's own. "But not a new jacket." is not a valid sentence.
I hope this was helpful.