Fill in the blank (_) in the following sentence from the following choices.
Sentence: The doctor sent Maria but not Sarah to the pharmacy because _ was very sick.

Choice 1: The doctor sent Maria but not Sarah to the pharmacy because Maria was very sick.
Choice 2: The doctor sent Maria but not Sarah to the pharmacy because Sarah was very sick.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.