Select the most appropriate meaning of the given idiom.

Lily-livered

The correct option is Not brave.

Explanation:
The idiom "lily-livered" is used to describe someone who is cowardly, timid, or easily frightened.
Historically, in medieval times, people believed that the liver was the seat of courage and passion. A healthy liver full of blood was associated with bravery, whereas a pale, bloodless liver (like a white lily) signified a lack of courage. Therefore, a "lily-livered" person is literally "white-livered" or "not brave."

Let us look at the meaning of all the options:
1. Brave: Ready to face and endure danger or pain (opposite of lily-livered).
2. Comical: Amusing or causing laughter.
3. Not brave: Lacking courage; cowardly (correct meaning of lily-livered).
4. Naughty: Badly behaved or disobedient.