Choose the odd one out.

JKST
GHQR
ABKL
DENO E. PQWX

The odd one out is B. GHQR.

A. JKST, C. ABKL, D. DENO, and E. PQWX are all sets of three letters that are in alphabetical order. B. GHQR is not in alphabetical order.