Context: I get to the merge point , and he goes flying right through his stop sign . I have to slam on my brakes , I lay on the horn ... at least he bothered to realize " Oh , shit , I just fucked up , did n\'t I ? " And pulled over for a second to make sure he did n\'t make me go flying off the road or anything . But only for a second , then he starts up again , waves his hand out the window in an attempt to say \' sorry , \' and turns up into the development .
Question: What may be the reason for laying on the horn ?
Option 0: For the person to apologize .
Option 1: For the person to revoke their license .
Option 2: For the person to pull over and explain why they did that .
Option 3: For the person to realize they messed up .
Answer: 3