Answer:
The right answer is, Torcí.
* Tropecé con una piedra, me caí, y me torcí el tobillo.
Step-by-step explanation:
Because the past tenses and imperfect tenses are used in actions that were carried out in the past tense, therefore we must identify the person in the sentence and be able to conjugate the verb in a logical way and that is consistent with what is being expressed.