Select the most appropriate meaning of the given idiom. Fifth wheel

The most appropriate meaning of the idiom "fifth wheel" is >An unneeded person.<

The idiom "fifth wheel" is used to describe someone who is not needed or wanted in a group or situation. It is often used to describe someone who is tagging along with a group of people and is not altogether welcome. The idiom comes from the fact that a carriage or wagon needs four wheels to function properly. A fifth wheel would be unnecessary and would only get in the way.

The other options are not correct.

• A much needed thing is not a "fifth wheel."
• A wealthy person is not a "fifth wheel."
• A helping hand is not a "fifth wheel."