Select the option that expresses the given sentence in passive voice.…

The correct answer is Option (2) → Nani was made to give up sugar completely by the doctor.

Passive of “make” + person + verb:

Change	Active	Passive	Why
Object becomes subject	Nani	Nani	Nani receives the action of “made”, so she becomes the subject.
Tense kept	made	was made	“Made” is in the simple past, so the passive stays in the simple past: was / were + past participle (V3). “Was” because Nani is one person.
“To” added	give up	to give up	After “made” in the active, the verb has no “to”. In the passive, “to” comes back: was made to + verb.
Agent (by ...)	The doctor	by the doctor	The doctor is named, so the doer comes after “by”.
Full sentence	The doctor made Nani give up sugar completely.	Nani was made to give up sugar completely by the doctor.

“See” and “hear” work the same way: “to” comes back in the passive. Example: We heard the baby laugh. → The baby was heard to laugh.

Why the Other Options are Incorrect?

Option 1: Nani was made give up sugar completely by the doctor. — Incorrect. “To” is missing. After “was made”, the next verb needs “to”.

Option 3: The doctor was made to give up sugar completely by Nani. — Incorrect. The doer and the receiver are swapped. Now Nani makes the doctor give up sugar.

Option 4: Nani had been made to give up sugar completely by the doctor. — Incorrect. “Had been made” is the past perfect. The active “made” is the simple past.