Correct Answer: To become excited or angry

Solution : The correct choice is the first option.

Explanation : The phrase "go bananas" is an idiomatic expression that means to become very excited or angry. In this context, "go" is a verb indicating a change in state, and "bananas" is used informally to convey a sense of extreme emotion or behaviour.

Therefore, the correct meaning of the idiom is to become excited or angry.