Directions: Select the misplaced modifier in the sentence. Which modifier is misplaced in the sentence?

While competing in the race, a large rock that was sitting on the track caused Maura to trip and stumble a few steps.

The misplaced modifier is While competing in the race, I understand that the rock was running in the race and it sat down and made Maura to trip; the sentence should go like this. large rock that was sitting on the track caused Maura to trip and stumble a few steps. While competing in the race, Maura to tripped and stumbled a few steps on a large rock that was sitting on the track.