My radio has not been repaired.
Explanation:
An action in a sentence can be represented in two ways, namely active and passive voice.
The passive voice always uses the past participle form of the main verb irrespective of any tense. Only the auxiliary verbs depend upon the sentence given in active voice.
The correct answer is D)My radio has not been repaired.
Option D is correct as the given sentence is in active voice and to transform it into passive voice the subject of the given sentence
(The mechanic) come in the place of the object and vice versa. Also, as the sentence is in the present perfect tense, 'been' is added.
