Select the correct passive voice. He has broken the radio.

Answer: The radio has been broken by him.

Reason: The active sentence "He has broken the radio." is in the present perfect. To form the passive in present perfect, make the object the subject, keep has/have, add been, and use the past participle.

• Active structure: Subject + has/have + past participle (He + has + broken + the radio).

• Passive structure: Object becomes subject + has/have + been + past participle + by + subject (The radio + has + been + broken + by + him).

Why the other choices are wrong:

• "The radio had been broken by him." is wrong because it uses past perfect (had been) instead of present perfect.

• "The radio was broken by him." is wrong because it uses simple past (was broken), not present perfect passive.

• "The radio has been broke by him." is wrong because "broke" is not the past participle; the correct past participle is "broken."

Therefore, "The radio has been broken by him." is the correct passive form.