Select the most appropriate meaning of the given idiom.

Save your breath

To make an effort that will be futile

The most appropriate meaning of the idiom "save your breath" is >to make an effort that will be futile.<

It is used to tell someone that their efforts are not going to be successful, and that they should not waste their time or energy. The idiom is often used when someone is trying to argue with someone who is not willing to listen.

The other options are not correct.

• To hold one’s anger: This is not the same as making an effort that will be futile.
• To work hard: This is not the same as making an effort that will be futile.
• To be resentful: This is not the same as making an effort that will be futile.