Select the most appropriate meaning of the idiom.

Pull yourself together

Regain composure

The most appropriate meaning of the idiom "pull yourself together" is to regain composure.

The other options are incorrect.

• "Use a rope ladder" is not the same as regaining composure. A rope ladder is used to climb up or down, while regaining composure is about calming down and controlling your emotions.
• "Be friendly with everyone" is not the same as regaining composure. Being friendly is about being kind and approachable, while regaining composure is about calming down and controlling your emotions.
• "Talk about fitness" is not the same as regaining composure. Talking about fitness is about discussing exercise and health, while regaining composure is about calming down and controlling your emotions.