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

The correct answer is B. Mentenance. The correct spelling is maintenance.

• Behaviour is the correct spelling of the word. It is a noun that means the way in which someone behaves or acts.
• Commend is the correct spelling of the word. It is a verb that means to express approval or praise of someone or something.
• Appraise is the correct spelling of the word. It is a verb that means to estimate the value of something.
• Mentenance is the incorrect spelling of the word. The correct spelling is maintenance. It is a noun that means the act of keeping something in good condition.