Choose the alternative which can be substituted for the given word/sentence.
A person who insists on something.

Correct option is B

The correct one-word for the given sentence is Stickler.
· Correct Word: Stickler – Hindi: नियमों का पक्का पालन करने वाला
· Use in a sentence: He is a stickler for punctuality and never tolerates delays.
Explanation: A "stickler" is a person who demands strict adherence to rules or standards.
❌ Meanings of the other options:
· (a) Disciplinarian: One who enforces discipline. | Hindi: अनुशासनप्रिय व्यक्ति
· (c) Instantaneous: Happening immediately. | Hindi: तात्कालिक
· (d) Boaster: A person who brags. | Hindi: डींग मारने वाला