Find the odd number / letters / word from the given alternative:

JIHG
OPNM
SRQP
ZYXW

The answer is C. SRQP.

In each of the other options, the letters are in alphabetical order.

A. JIHG: J comes before I, I comes before H, H comes before G.
B. OPNM: O comes before P, P comes before N, N comes before M.
D. ZYXW: Z comes before Y, Y comes before X, X comes before W.

In C. SRQP, S comes before R, R comes before Q, but P comes before Q.