Fill in the blank (_) in the following sentence from the following choices.
Sentence: Ian really had to go the bathroom while he was at Craig's house, causing _ to feel amused.

Choice 1: Ian really had to go the bathroom while he was at Craig's house, causing Ian to feel amused.
Choice 2: Ian really had to go the bathroom while he was at Craig's house, causing Craig to feel amused.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.