Explanation:

- See eye to eye is an idiom used to indicate agreement or having the same perspective or opinion on something.

- Option 1: Disturb - This means to interrupt or interfere, which doesn't relate to the idiom.

- Option 2: Agree - This means to have the same opinion or to concur, which is the correct meaning of the idiom.

- Option 3: Quarrel - This means to argue or have a disagreement, which is opposite to the idiom’s meaning.

- Option 4: Smile - This involves forming the features into a pleased or kind expression, unrelated to the idiom.