Fill in the blank (_) in the following sentence from the following choices.
Sentence: Craig has problems with asthma so he goes to see his doctor Nelson, because _ struggles in day tasks.

Choice 1: Craig has problems with asthma so he goes to see his doctor Nelson, because Craig struggles in day tasks.
Choice 2: Craig has problems with asthma so he goes to see his doctor Nelson, because Nelson struggles in day tasks.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.