Correct option is A
The correct option to fill in the blank is (a)
thorough.
Explanation: “
Thorough” means complete and detailed, which suits the context of a careful crime scene investigation. (पूर्ण और सावधानीपूर्वक)
Example: The manager conducted a
thorough review before approving the report.
Other options:
· (b)
hasty – Done quickly without care (जल्दबाज़ी में)
· (c)
cursory – Done with little attention (ऊपरी तौर पर)
· (d)
superficial – Lacking depth or detail (सतही)