Fill in the blank (_) in the following sentence from the following choices.
Sentence: Laura gave birth to twins and Tanya delivered them, so _ was sure to thank them when it was done.

Choice 1: Laura gave birth to twins and Tanya delivered them, so Laura was sure to thank them when it was done.
Choice 2: Laura gave birth to twins and Tanya delivered them, so Tanya was sure to thank them when it was done.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
2.