The correct answer is 'for:' Key Points - Let us look at the usage of the given options: - We use for to talk about a purpose or a reason for something. - Example: I want to visit him only for you. - We can use to as a preposition to indicate a destination or direction. - Example: We're going to Liverpool next week. - We can use 'with' when you're talking about people, or things being together. - Example: I was with Jane yesterday when the accident happened. - We use at to talk about points in time, ages and some periods of time. - Example: I was up at 6 am this morning. - Correct sentence: He is liable for his wife's debts.