Select the most appropriate meaning of the underlined idiom.

Hats off to someone

Congratulations to

The most appropriate meaning of the underlined idiom "hats off to someone" is Congratulations to.

The idiom "hats off to someone" is used to express admiration or respect for someone's achievement. It is often used in a sporting context, but it can be used in any situation where someone has done something impressive.

In the sentence, the person is saying "hats off to the runner" to congratulate them on their achievement. They are not giving them hats, announcing a prize for them, or making new hats for them.