Fill in the blank (_) in the following sentence from the following choices.
Sentence: Robert ate heavily compared to Michael because _ was a model preparing for the fashion show.

Choice 1: Robert ate heavily compared to Michael because Robert was a model preparing for the fashion show.
Choice 2: Robert ate heavily compared to Michael because Michael was a model preparing for the fashion show.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.