A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
MQ, SO, QU, WS,?

Correct option is C

Given series: MQ, SO, QU, WS, ?
First letters:
M (13th letter), S (19th letter), Q (17th letter), W (23rd letter)
Pattern: The first letters alternate between +6 and -2:
M → S (13 + 6 = 19)
S → Q (19 - 2 = 17)
Q → W (17 + 6 = 23)
Continuing the pattern:
W → U (23 - 2 = 21)
Second letters:
Q (17th letter), O (15th letter), U (21st letter), S (19th letter)
Pattern: The second letters alternate between -2 and +6:
Q → O (17 - 2 = 15)
O → U (15 + 6 = 21)
U → S (21 - 2 = 19)
Continuing the pattern:
S → Y (19 + 6 = 25)
Conclusion:
The missing term is UY.
The correct option is (c) UY.