Fill in the blank (_) in the following sentence from the following choices.
Sentence: Kenneth but not Neil was able to survive in the wilderness because _ had not gone camping often as a child.

Choice 1: Kenneth but not Neil was able to survive in the wilderness because Kenneth had not gone camping often as a child.
Choice 2: Kenneth but not Neil was able to survive in the wilderness because Neil had not gone camping often as a child.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
1.