Final answer:
The correct conclusion from the lines: Hamlet believes it is a sin for humans not to use their God-given capacity for reason.
Step-by-step explanation:
Hamlet believes it is a sin for humans not to use their God-given capacity for reason. He expresses this belief in the lines: "Sure He that made us with such large discourse, Looking before and after, gave us not That capability and godlike reason To fust in us unused." Hamlet is emphasizing the importance of using reason and logic instead of wasting these valuable abilities.
He is not saying that killing Claudius is the only logical thing for him to do or that he is smarter than Claudius. Additionally, there is no indication that Hamlet feels like God wants him to get revenge for his father's murder.