Select the most appropriate meaning of the given idiom.

Hit the nail on the head

To be exactly right about something

The most appropriate meaning of the idiom "hit the nail on the head" is to be exactly right about something.

This idiom is used to describe someone who has made a very accurate statement or observation. It is often used to praise someone for their insight or intelligence.

The other options for the meaning of the idiom are not as accurate.

• To be extremely cautious does not typically describe being exactly right about something.
• To injure someone fatally is a negative and harmful meaning, which is not consistent with the positive connotation of the idiom.
• To be extremely hard working does not typically describe being exactly right about something.