Select the option that expresses the given sentence in passive voice.
The tutor was not teaching the student.

Correct option is C

The correct passive voice for the given sentence is "The student was not being taught by the tutor."
Rules of conversion (Active → Passive):
1. Identify the subject, verb, and object in the active voice:
· Subject: The tutor
· Verb: was not teaching
· Object: The student
2. In the passive voice, the object of the active sentence becomes the subject:
· Subject: The student
3. Use the correct passive construction:
· Passive: The student + was not being + past participle (taught) + by the tutor.
Why other options are incorrect:
· (a) Changes the subject and verb incorrectly.
· (b) Misses the progressive tense ("being").
· (d) "Being teaching" is grammatically incorrect.