Select the most appropriate meaning of the given idiom.

Ace in the hole

A major advantage that one keeps hidden until an ideal time.

The most appropriate meaning of the given idiom "ace in the hole" is a major advantage that one keeps hidden until an ideal time.

This idiom means to have something that gives you a significant advantage over your opponent, but that you keep hidden until the right time to use it. It is often used to describe a secret weapon or strategy that someone has up their sleeve.

The other options are incorrect:

• To create noisy disturbances so that competitors are unable to work: This is not the meaning of the idiom "ace in the hole."
• To attempt to do the impossible: This is not the meaning of the idiom "ace in the hole."
• To suffer an injury on the lower body: This is not the meaning of the idiom "ace in the hole."