Answer: B. Richard plays the piano for the jazz band.
Explanation:
Active voice is when the subject is the thing or person who performs the action and takes a direct object. The construction is normally, subject, verb and object. In the passive voice, the subject isn't the performer of the action but rather the receiver of the action.
Based on the information above, the active voice will be "Richard plays the piano for the jazz band". Other sentences are passive voice.
