Fill in the blank (_) in the following sentence from the following choices.
Sentence: Neil requested that Christopher change the water in the fish tank because _ is close to it.

Choice 1: Neil requested that Christopher change the water in the fish tank because Neil is close to it.
Choice 2: Neil requested that Christopher change the water in the fish tank because Christopher is close to it.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
1. Neil requested that Christopher change the water in the fish tank because Neil is close to it. (This is incorrect, but it's