The correct answer is B. Quarternary.
A. Quadruple is a word that means four times as much or as many. It is spelled correctly. B. Quarternary is a word that means of or relating to the fourth part or division of something. It is spelled incorrectly. The correct spelling is quaternary. C. Quibble is a word that means to argue about a small or unimportant point. It is spelled correctly. D. Quiescent is a word that means at rest or inactive. It is spelled correctly.
I hope this helps!
