Fill in the blank (_) in the following sentence from the following choices.
Sentence: Most people would choose a pet dog over a lizard because a pet _ is fun.

Choice 1: Most people would choose a pet dog over a lizard because a pet dog is fun.
Choice 2: Most people would choose a pet dog over a lizard because a pet lizard is fun.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.