Correct option is A
NS-PU-RT
Second letters: +2, then −1
Q (17) → S (19) → U (21): +2 each time
V (22) → X (24) → W (23): +2, then −1
Second Triad: NS – PU – RT
N (14) → P (16) → R (18): +2 each step
S (19) → U (21) → T (20): +2, then −1
Apply pattern to options:
Option A: KP – MR – OQ
K → M → O = +2, +2 (Follow)
P → R → Q = +2, then −1 (Follow)