Select the option that can be used as a one-word substitute for the given group of words.
Showing great attention to detail and correct behaviour

Correct option is B

The correct one-word for the given group of words is (b) Punctilious.
Punctilious: Extremely careful in observing rules, formalities, and attention to small details and proper behavior. (Hindi: सूक्ष्म नियमों का पालन करने वाला)
Example: The lawyer was punctilious about courtroom etiquette.
Meanings of other options:
· (a) Zealous: Passionate or fervent (उत्साही)
· (c) Disciplined: Well-behaved, self-controlled (अनुशासित)
· (d) Punctual: On time (समय का पाबंद)