A. I would buy a large sailing yacht if I were to become rich.
Explanation:
This is the sentence that contains an error in the verb voice. The voice of a verb is the part that describes the relationship between the action that the verb conveys and the participants identified by its arguments. This means that when the subject is the one who performs the action, the sentence is said to be in the active voice. On the other hand, when the subject is the one who receives the action, the sentence is considered to be in the passive voice.
