Fill in the blank (_) in the following sentence from the following choices.
Sentence: When Adam answered the phone, he heard Joseph laughing with friends; _ felt jealous he wasn't there.

Choice 1: When Adam answered the phone, he heard Joseph laughing with friends; Adam felt jealous he wasn't there.
Choice 2: When Adam answered the phone, he heard Joseph laughing with friends; Joseph felt jealous he wasn't there.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.