Fill in the blank (_) in the following sentence from the following choices.
Sentence: In order to control his child's temper, the father choose the reward over the punishment because he thought the _ would be more subtle.

Choice 1: In order to control his child's temper, the father choose the reward over the punishment because he thought the reward would be more subtle.
Choice 2: In order to control his child's temper, the father choose the reward over the punishment because he thought the punishment would be more subtle.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.