Select the most appropriate meaning of the given idiom.

Back out

To withdraw from

The most appropriate meaning of the idiom "back out" is to withdraw from.

This idiom can be used to describe a person who changes their mind about something or who decides not to do something that they had previously agreed to do. It can also be used to describe a person who pulls out of a race or competition. For example, you might say "He backed out of the deal at the last minute." This means that he changed his mind about the deal and decided not to go through with it.

The other options are not as accurate descriptions of the meaning of the idiom.

• To stand out: This idiom means to be noticeable or different from others.
• To move backwards: This idiom means to move in the opposite direction of forward.
• To pull over: This idiom means to stop a vehicle on the side of the road.