Change the following sentence into active voice:
The bill was passed in the parliament.

Correct option is B

The correct active voice of the given sentence is (b) The parliament passed the bill.
Rules of conversion (Passive → Active):
1. Identify object of active = subject of passive → here, the bill (passive subject) becomes object in active.
2. Identify agent/performer → implied by “in the parliament,” logically Parliament is the doer.
3. Convert verb: was passed (simple past passive) → passed (simple past active).
4. Structure:
5. Active: Subject (doer) + V2 + Object.
6. Passive: Object + was/were + V3 (+ by + agent).
Structure:
· Active voice: S + V2 + O → The parliament passed the bill.
· Passive voice: O + was/were + V3 (+ by + S) → The bill was passed (by the parliament).
Why (a), (c), (d) are wrong:
• (a) Redundant and clumsy (“in the parliament” repeated); “members of the parliament” is an unnecessary specificity—the standard, concise subject is The parliament.
• (c) Changes tense/aspect incorrectly to present perfect (“has passed”).
• (d) Uses They (vague pronoun) and present perfect, altering meaning/tense.
Information booster:
• When the agent is obvious/official body, use that as subject in active (e.g., The committee approved…).
• Keep tense same during conversion (simple past passive → simple past active).