6819. He was adjudged as the best orator of the college.

✅ The correct answer is option D.
Critic : a person who expresses an unfavourable opinion of something.

Debater : a person who argues about a subject, especially in a formal manner.

Singer : a person who sings, especially professionally.

Speaker : a person who delivers a speech or lecture.

Orator : a public speaker, especially one who is eloquent or skilled.

Synonym of Orator is Speaker