Fill in the blank (_) in the following sentence from the following choices.
Sentence: Rachel practiced every day to be flexible while Mary did not. _ was able to do the splits.

Choice 1: Rachel practiced every day to be flexible while Mary did not. Rachel was able to do the splits.
Choice 2: Rachel practiced every day to be flexible while Mary did not. Mary was able to do the splits.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.