Choose the word which is different from the rest.

The answer is: B. Sty

A sty is a pen or enclosure for pigs. A stable is a building or enclosure for horses. A kennel is a building or enclosure for dogs. A den is a wild animal’s home or resting place.

A sty is different from the other options because it is the only option that is specifically for pigs. The other options are for horses, dogs, and wild animals, respectively.