Correct option is D
Given:
Capsicum, Brinjal, Potato, Ladies' fingers
Logic: all are above-ground vegetables.
Capsicum → Above-ground vegetables.
Brinjal → Above-ground vegetables.
Ladies' fingers → Above-ground vegetables.
But, Potato → An underground vegetable (a tuber).
So, Thus, Potato is the odd one out.
Thus, the correct option is: (d)