Select the most appropriate meaning of the given idiom.

Touch and go

Uncertain

The most appropriate meaning of the idiom "touch and go" is >uncertain.<

It means that the outcome of something is uncertain or that something could change at any moment. The idiom is often used to describe a situation that is critical or dangerous.

The other options are not correct.

• Unchanging: This is not the same as uncertain.
• Undoubted: This is not the same as uncertain.
• Unimportant: This is not the same as uncertain.