What is the correct form of the verb in the following sentence: She ______ her keys in the car.

The correct form of the verb in the sentence is "left." This choice is the past tense of "leave," which indicates that the action has already occurred. In the context of the sentence, using "left" communicates that she has already placed her keys in the car at some point in the past.

The other options do not fit grammatically in this sentence. "Leave" is the base form of the verb and would not work properly since the sentence requires a past tense. "Leaved" is not a correct form of the verb, as "leave" does not have a past participle form like regular verbs do. "Leaving" is the present participle and would imply that she is currently in the process of leaving the keys, which does not convey the intended meaning. Thus, "left" is the appropriate choice to accurately express the action that has already taken place.