Fill in the blank (_) in the following sentence from the following choices.
Sentence: Donald liked to drink coffee and Jeffrey drank water because _ prefered beverages with caffeine.

Choice 1: Donald liked to drink coffee and Jeffrey drank water because Donald prefered beverages with caffeine.
Choice 2: Donald liked to drink coffee and Jeffrey drank water because Jeffrey prefered beverages with caffeine.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.