Select the most appropriate one-word substitution for the given words.
One who investigates and solves crimes

Correct option is C

The correct one-word for the given group of words is (c) detective.
A Detective is a person, usually from the police, who investigates and solves crimes. (जासूस/जांचकर्ता)
Example: The detective solved the robbery case within two days.
Meanings of the given other options:
· (a) Lawyer: A person who practices law. (वकील)
· (b) Criminal: A person who commits crimes. (अपराधी)
· (d) Journalist: A person who collects and reports news. (पत्रकार)