Find out that word, the spelling of which is wrong.

Bourgeoisie
Beverage
Blithsome
Behaviour

The correct answer is C. Blithsome.

The word “blithsome” is not a real word. The correct spelling is “blithesome”.

“Blithesome” means “happy and carefree”. It is an adjective.

“Bourgeoisie” is a noun that refers to the middle class.

“Beverage” is a noun that refers to a drink.

“Behaviour” is a noun that refers to the way someone acts.