Select the most appropriate option to fill in the blank.
W S O K ___.

Correct option is B

Concept Used:
· The letters are moving backward in steps of 4.
Solution:
· Starting from W: W - 4 = S, S - 4 = O, O - 4 = K, K - 4 = G.
Thus, the next letter is H.
Final Answer: (b) G