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

The correct answer is C. The correct spelling is “successor”.

A. Subservience is the state of being subservient or submissive.
B. Souvenir is a keepsake or memento of a place or event.
D. Stirrup is a looped metal frame attached to a saddle and used by a rider to keep the foot in place.

The word “succesor” is not a real word. The correct spelling is “successor”. A successor is someone who takes over the position of another person, especially after their death or retirement.