Fill in the blank (_) in the following sentence from the following choices.
Sentence: Brett cracked his skull very hard during the accident unlike Eric because _ was unprotected.

Choice 1: Brett cracked his skull very hard during the accident unlike Eric because Brett was unprotected.
Choice 2: Brett cracked his skull very hard during the accident unlike Eric because Eric was unprotected.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.