He was accustomed . . . . . . chewing Tulsi leaves even when he delivered the lecture.

A. of

B. about

C. at

D. to

Answer: Option D

Solution(By Examveda Team)

Accustomed means to get used to something or become familiar with.“To” is the correct preposition to use after accustomed.
He was accustomed to chewing Tulsi leaves even when he delivered the lecture.