Select the option that can be used as a one-word substitute for the highlighted group of words.
Mohan frequently wastes his money on luxurious objects such as cars and digital devices.

Correct option is A

The correct one-word for the given group of words is (a) Extravagant.
Explanation:
Extravagant means spending much more than necessary or being wasteful with money. (अत्यधिक खर्चीला)
Example: His extravagant lifestyle left him in debt.
Meanings of the given other options:
· (b) Businessman: One engaged in commerce (व्यवसायी)
· (c) Consumer: One who buys goods/services (उपभोक्ता)
· (d) Capitalist: A wealthy person who uses money to invest (पूंजीपति)