Fill in the blank (_) in the following sentence from the following choices.
Sentence: Riding with Eric was dangerous compared to riding with Justin, as _ tended to be reckless.

Choice 1: Riding with Eric was dangerous compared to riding with Justin, as Eric tended to be reckless.
Choice 2: Riding with Eric was dangerous compared to riding with Justin, as Justin tended to be reckless.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.