Fill in the blank (_) in the following sentence from the following choices.
Sentence: Joseph looked younger than Lawrence did because _ was highly diligent about a skincare regime.

Choice 1: Joseph looked younger than Lawrence did because Joseph was highly diligent about a skincare regime.
Choice 2: Joseph looked younger than Lawrence did because Lawrence was highly diligent about a skincare regime.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.