“Set your teeth on edge” method in our madness” hearts upon our sleeve” All are examples of ___

Idioms.

Explanation:

An idiom is a phrase, group of words or expression in a fixed order that mainly deduce a figurative, non-literal meaning attributed to the expression. It is an expression that is traditionally peculiar to a native speaker of a language.

For instance, the idiom “Set your teeth on edge” means to find something extremely unpleasant, annoying and grossly irritating.

The idiom "method in our madness” simply means, a specific, rational approach and purpose that may appear odd or crazy to another person at an initial stage.

The idiom "hearts upon our sleeve” means to show one's emotions and feelings openly rather than hiding it.

the correct answer can either be a or b because it could be both but you should probally choose b