what is a idiom?

the queston is this "which sentence uses an idiom?"

A)gustavo said we should go to the party.

B)gustavo said we should go for it.

C)gustavo said we might go with him.

I think you mean, "What is an idiom?"

http://dictionary.reference.com/browse/idiom

Which one, do you think?

no i mean

(A) idiom

and c

Nope. It's B.

In A and C, all the words have explainable meanings in the ways they are used in the sentences, but not so with B. The idiom there is "go for it" because it's not clear that anyone is GOING anywhere and it's not clear what "it" is, yet we understand the idea that sentence is trying to get across.

An idiom is a phrase or expression that has a figurative meaning that is different from its literal meaning. It is usually understood by native speakers of a language, but can be confusing for non-native speakers. Idioms can add colorful language and convey meanings in a more creative and idiomatic way.

To determine which sentence uses an idiom, we need to look for a phrase or expression that has a figurative meaning. Let's examine the given sentences:

A) "Gustavo said we should go to the party."
This sentence does not contain an idiom. It is a straightforward statement without any figurative language.

B) "Gustavo said we should go for it."
This sentence does contain an idiom. The phrase "go for it" is an idiom that means to proceed or take action without hesitation or fear.

C) "Gustavo said we might go with him."
This sentence does not contain an idiom. It is a simple statement about the possibility of going with Gustavo.

Therefore, the sentence that uses an idiom is B) "Gustavo said we should go for it."