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

Perennial
Penitence
Plaintiff
Pedastal

The correct answer is C. Plaintiff. The correct spelling is plaintiff.

A perennial is a plant that lives for more than two years.

Penitence is the feeling of regret or remorse for one’s sins or wrongdoings.

A pedestal is a base or support for a statue or other object.