Select the correct passive form of the given sentence.
"She is cooking dinner."

Correct option is B

The correct passive voice of the sentence is “Dinner is being cooked by her.”
Explain the rules of conversion (Active → Passive) with structure in detail:
· Identify Tense: The original sentence is Present Continuous (is/am/are + V1-ing): is cooking.
· Passive Structure for Present Continuous: am/is/are + being + V3 (past participle) + (by + agent) (agent optional).
· Apply the rule: is cooking → is being cooked; subject–object swap: She (agent) ↔ dinner (patient).
· Final form: Dinner (subject) + is being + cooked (V3) + by her (agent).
Structure:
· Active Voice: Subject + am/is/are + V1-ing + Object.
· Passive Voice: Object + am/is/are + being + V3 (+ by + Subject).
Example:
· Active: They are painting the wall. → Passive: The wall is being painted (by them).
Why other options are incorrect:
· (a) has been cooked → Present Perfect Passive, not Present Continuous.
· (c) was cooked → Simple Past Passive.
· (d) is cooked → Simple Present Passive (habitual/general truth), not ongoing action.