Answer:
Claudius's guilt
Hamlet's madness.
Step-by-step explanation:
Hamlet is a tragedy play written by William Shakespeare. The play is about Prince Hamlet, who mourns and seeks to avenge his father, King Hamlet's murderer.
In Act 3, the two questions that were definitely not settled were Claudius's guilt and Hamlet's madness. The act begins with Claudius questioning Rosencrantz and Guildenstern about Hamlet's insanity. The question remains unanswered as they were not able to answer the reason behin Hamlet's strange behaviour.
Another question that remains unanswered was whether Clauidius was guilty of murdering King Hamlet or not. Though his concern for Hamlet's insane behavior seemed to come out of love for him, but in secret he was conspiring to kill him. This questions that whether Claudius was trying to hide his sin, or with what purpose was he trying to kill Hamlet.
Therefore, the correct answers are option B and D.