What action by Claudius in Act IV raises suspicion among the people of Denmark?

The right answer for the question that is being asked and shown above is that: "D. He allows Ophelia to be buried in sacred ground."

These are the following choices:

A. He sends Hamlet to England.

B. He buries Polonius secretly, without ceremony.

C. He plans to have Laertes kill Hamlet in a duel.

D. He allows Ophelia to be buried in sacred ground.