Fill in the blank (_) in the following sentence from the following choices.
Sentence: Monica showed Rebecca how to finish the stich because _ was an  expert at making dresses.

Choice 1: Monica showed Rebecca how to finish the stich because Monica was an  expert at making dresses.
Choice 2: Monica showed Rebecca how to finish the stich because Rebecca was an  expert at making dresses.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.