Fill in the blank (_) in the following sentence from the following choices.
Sentence: The skills of Cynthia were not as good as Elena, because _ had a lot more training.

Choice 1: The skills of Cynthia were not as good as Elena, because Cynthia had a lot more training.
Choice 2: The skills of Cynthia were not as good as Elena, because Elena had a lot more training.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
1.