Fill in the blank (_) in the following sentence from the following choices.
Sentence: Katrina could hold the plank pose for three minutes while Natalie could only do so for 10 seconds because _ was in poor shape.

Choice 1: Katrina could hold the plank pose for three minutes while Natalie could only do so for 10 seconds because Katrina was in poor shape.
Choice 2: Katrina could hold the plank pose for three minutes while Natalie could only do so for 10 seconds because Natalie was in poor shape.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
1 (However, it's important to note that the sentence as written is incorrect, as it states that Katrina was able to hold