Fill in the blank (_) in the following sentence from the following choices.
Sentence: Whilst Rachel was able to touch their ankles from a standing position, Monica was not. This is because _ was very unfit.

Choice 1: Whilst Rachel was able to touch their ankles from a standing position, Monica was not. This is because Rachel was very unfit.
Choice 2: Whilst Rachel was able to touch their ankles from a standing position, Monica was not. This is because Monica was very unfit.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.