Answer:
D.
Step-by-step explanation:
Passive Voice is a voice in which the subject is being acted upon by a verb. A passive voice is a sentence in which the object of the sentence is changed into the subject of the sentence.
For instance, 'Sandy threw the ball' will be converted into passive voice as 'The ball was thrown by Sandy.'
In the given options, the sentence that uses verb in the passive voice is option D. In option D, the subject (Rutherford B. Hayes) is being acted upon by the verb (confirmed).
Thus correct option is D.