Select the most appropriate meaning of the given idiom.

To hold water

To be valid and reasonable

The most appropriate meaning of the idiom "to hold water" is to be valid and reasonable.

This idiom is used to describe an argument, statement, or explanation that is sound and convincing. It is often used to evaluate the strength of an argument or to assess the credibility of a source of information.

For example, you might say that someone's argument doesn't hold water if it is based on false or misleading information. Or, you might say that a new scientific theory holds water if it has been tested and verified.

The other options are not as accurate.

• To be unsteady and unsure - This option is not accurate because the idiom does not suggest that the argument or statement is weak or unreliable.
• To be large and deep - This option is not accurate because the idiom is not about physical size or depth.
• To be sad and depressed - This option is not accurate because the idiom does not suggest that the argument or statement is negative or unpleasant.