Select the most appropriate ANTONYM of the highlighted word in the given sentence.
The amateur proved them all wrong.

Correct option is D

The correct antonym of the given word is Professional.
· Amateur: A person who engages in an activity for pleasure rather than as a profession. (शौकिया, नौसिखिया)
· Example: He is an amateur photographer who enjoys taking pictures in his free time.
· Professional: A person who is skilled and paid for a particular activity. (पेशेवर)
· Example: She is a professional artist and earns a living from her paintings.
Synonyms: Novice, Beginner, Learner, Non-professional.
Antonyms: Expert, Skilled, Professional, Specialist.
Meanings of the other options:
· Assistant: A person who helps someone in their work. (सहायक)
· Prefect: A senior student with disciplinary authority in some schools. (प्रधान छात्र)
· Chef: A person who cooks professionally. (पेशेवर रसोइया)