Select the most appropriate meaning of the underlined idiom in the given sentence.

My elder brother is so innocent that winning an argument against him is like shooting fish in a barrel.

Exceptionally easy to do

The most appropriate meaning of the underlined idiom in the given sentence is (☀) Exceptionally easy to do.

The idiom "shooting fish in a barrel" means something that is very easy to do. This is because a barrel full of fish is a sitting duck, and it would be very easy to shoot them all.

In the sentence, the speaker is saying that it is very easy to win an argument against their elder brother because he is so innocent. He is not very knowledgeable or experienced, so he is easy to outsmart.

The other options are incorrect.

• "Indulge in an illegal activity" is not the meaning of the idiom "shooting fish in a barrel".
• "Asking for charity" is not the meaning of the idiom "shooting fish in a barrel".
• "Making someone uneasy" is not the meaning of the idiom "shooting fish in a barrel".