Correct Answer:
A. We are being watched
Explanation:
The correct answer is We are being watched because converting a present continuous active sentence to passive voice requires maintaining the continuous aspect using 'being'.
- Step 1 (Structural Shift): The active voice object 'us' becomes the passive subject 'We'. The active verb 'is watching' is in the present continuous tense.
- Step 2 (Passive Formulation): To convert present continuous to passive, the formula is: Subject + am/is/are + being + past participle (V3). This fields 'We are being watched', while the original indefinite subject 'someone' is dropped since it adds no new information.
- Incorrect Options:
- We were watched is incorrect because it shifts the tense to the simple past, changing the timing of the active sentence.
- We watch is incorrect because it remains in the active voice and incorrectly mirrors a present simple frame.
- We are watched is incorrect because it uses the simple present passive, omitting the ongoing nature denoted by the continuous aspect.