A person who insists on something
A. Disciplinarian
B. Stickler
C. Instantaneous
D. Boaster
Answer: Option B
Solution (By Examveda Team)
One word substitution is Stickler.Disciplinarian: a person who believes in or practises firm discipline.
Stickler: a person who insists on a certain quality or type of behaviour.
Instantaneous: occurring or done instantly.
Boaster: a very boastful and talkative person.

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