Choose the correct meaning of the given idiom.

Down the tubes

Failing completely

The correct meaning of the idiom "down the tubes" is failing completely.

It is a colloquial expression that means to be ruined or destroyed. It can be used to describe a person, a plan, or a situation. For example, you might say that "my business is going down the tubes" or "my relationship is down the tubes."

The other options are incorrect:

• Minting money: This means making a lot of money.
• Being informal: This means being relaxed and casual.
• Going to swim: This means entering a body of water to swim.