Correct Answer: The instructions from the control room were misunderstood by the pilot.

Solution : The third option is the correct choice.

Passive voice is the voice in which the object experiences an action rather than the person who performs the action. Hence, the object in the active voice becomes the subject in the passive voice.

The structure of the passive sentence in the simple past tense is, " Plural object + were + past participle form of the main verb + by + agent of the action".

Therefore, the sentence in the passive form is: The instructions from the control room were misunderstood by the pilot .