Fill in the blank (_) in the following sentence from the following choices.
Sentence: William chased after Nick's hamster because _ asked her to be in charge of catching it and returning it to the cage.

Choice 1: William chased after Nick's hamster because William asked her to be in charge of catching it and returning it to the cage.
Choice 2: William chased after Nick's hamster because Nick asked her to be in charge of catching it and returning it to the cage.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.