Select the option that can be used as a one-word substitute for the given group of words.
Poor physical or mental condition

Correct option is D

The correct one-word for the given group of words is (d) Ill health.
Explanation: Ill health means poor health or a state of physical/mental weakness.
Example: He retired early due to ill health.
Meanings of the given other options:
· (a) Ill nature – Bad or unkind temperament (बदमिज़ाज)
· (b) Illicit – Illegal or forbidden (अवैध)
· (c) Ill-fated – Unlucky, destined for misfortune (दुर्भाग्यशाली)