Select the option that can be used as a one-word substitute for the given group of words.
The nest of a squirrel, typically in the form of a mass of twigs in a tree

Correct option is D

The correct one-word for the given group of words is (d) Drey.
A drey is a squirrel's nest, often built in trees using leaves, twigs, and grass. (गिलहरी का घोंसला)
Example: The baby squirrels were found in a drey hidden high up in the oak tree.
Meanings of the given other options:
· (a) Hole: an opening or cavity (छेद) – not specific to squirrels
· (b) Burrow: a hole dug by an animal (बिल) – typically underground, used by rabbits etc.
· (c) Lair: a wild animal’s resting place (गुप्त निवास)