Fill in the blank (_) in the following sentence from the following choices.
Sentence: My sister prefers watching basketball over soccer, because she thinks the _ is very entertaining.

Choice 1: My sister prefers watching basketball over soccer, because she thinks the basketball is very entertaining.
Choice 2: My sister prefers watching basketball over soccer, because she thinks the soccer is very entertaining.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
1
1.