Select the option that can be used as a one-word substitute for the given group of words.
Never changing and therefore boring.

Correct option is D

The correct one-word for the given group of words is (d) Monotonous.

Monotonous – Dull, tedious, and repetitious; lacking in variety and interest.
(Hindi: एकरस, उबाऊ)

Example: His job at the factory became monotonous after a few months.

Meanings of the given options:
· (a) Outdated – Old-fashioned or no longer useful (पुराना / अप्रचलित)
· (b) Impractical – Not suitable for use or not realistic (अव्यवहारिक)
· (c) Idealistic – Unrealistically aiming for perfection (आदर्शवादी)
· (d) Monotonous – Repetitive and boring due to lack of change (सहीविकल्प)