Correct Answer:
B. A mistake seems to have been made by you
This question requires changing a sentence from active voice to passive voice. The original sentence, "You seem to have made a mistake," contains the structure "seem to have + past participle", which indicates that an action appears to have been completed in the past. In passive voice, the object "a mistake" becomes the subject of the sentence.
While converting such sentences, the verb phrase "have made" changes to "have been made" to preserve the perfect infinitive structure. The verb "seem" remains unchanged because it expresses appearance or possibility rather than the action itself.
- Active Voice: You seem to have made a mistake.
- Passive Voice: A mistake seems to have been made by you.
- Rule: "Have made" changes to "have been made" in passive voice.
Therefore, the correct answer is: "A mistake seems to have been made by you."