Correct option is D
The correct one-word substitution is (d) Array.
- Given expression: Impressive display or range of a particular type of thing refers to a large and often striking collection or selection.
- Correct answer word: Array means an impressive or wide range of items; also a large number of things arranged in an orderly way. (Hindi meaning: श्रृंखला / विस्तृत संग्रह)
- Example: The exhibition showcased an array of innovative designs.
Meanings of other options:
- (a) Flotilla: a small fleet of ships or boats. (Hindi meaning: जहाजों का छोटा बेड़ा)
- (b) Frivolous: not having serious purpose; silly. (Hindi meaning: तुच्छ / हल्का)
- (c) Heretic: a person holding beliefs contrary to established doctrine. (Hindi meaning: विधर्मी)
So the correct answer is (d)