All would seem appropriate, but I'd say D, since it assists you in gathering data to support your clause
Based on the play "Hamlet" that was written by William Shakespeare, the sequence of events that triggered by killing of Polonius is this:
1. Hamlet was sent away.
2. Laertes returns in revenge for the death of his father.
3. Hamlet's ship was attacked by pirates.
4. The suicide of Ophelia.
Hope this helps.
