Choose the correct passive form.
“The teacher praised the student.”

Correct option is A

The correct passive form is option (a).

Correct Passive Sentence:
• The student was praised by the teacher.

Explanation:
• The given sentence is in simple past tense: “praised”.
• In passive voice, the object of the active sentence, “the student”, becomes the subject.
• The passive form of simple past tense is formed by using was/were + past participle.
• Therefore, “praised” changes into “was praised”, and “by the teacher” is added to show the doer.

Grammatical Rule Used (English):
• Active: Subject + V2 + object
• Passive: Object + was/were + V3 + by + subject

Grammatical Rule Used (Hindi):
• Simple past tense के passive voice में verb की second form को was/were + verb की third form में बदला जाता है।
• Active sentence का object, passive sentence का subject बनता है।

Explanation of Other Options:
• (b): This is in present perfect continuous-like structure and does not express passive voice.
• (c): The subject and object are wrongly reversed, so the meaning changes completely.
• (d): This is active voice, not passive voice.

So the correct answer is (a)