Which animal have single stomach with large caecum, unable to ruminate?

Answer: Option D

Donkey has single stomach with a large caecum, unable to ruminate.
The domestic donkey is a hoofed mammal in the family Equidae, the same family as the horse. The donkey gut can be apportioned into two segments including the foregut made up of the stomach and small intestine and hindgut or large intestine consists of cecum and colon.
They are non-ruminants and do not chew the cud.