Correct option is B
The correct passive voice form is
Let a cup of coffee be brought.
· The sentence is in the
imperative form (command).
· Passive of an imperative is:
Let + object + be + V3
· Passive:
Let a cup of coffee be brought.
· This maintains both grammatical accuracy and sentence type.
Grammatical Rule (English):
· Use
“Let + object + be + past participle (V3)” for imperative sentences in passive voice.
· Example: Active –
Open the door. → Passive –
Let the door be opened.
व्याकरण नियम (Hindi):
· आदेश सूचक वाक्य का passive बनाने के लिए "let + object + be + क्रिया का तीसरा रूप" का प्रयोग किया जाता है।
· उदाहरण:
दरवाज़ा बंद करो। →
Let the door be closed.
Why other options are incorrect:
· (a) Incorrect tense and auxiliary after “Let”
· (c) Not a passive structure
· (d) Polite request, but not a direct grammatical transformation