Which of the following terms will replace the question mark (?) in the given series?
MFT, NIS, PLQ, SON, WRJ, ?

​​Logic:

The first position follows the pattern of increasing by consecutive natural numbers (1, 2, 3, 4, 5).

The second position follows the pattern of increasing by 3.

The third position follows the pattern of decreasing by consecutive natural numbers (1, 2, 3, 4, 5).

M to N: +1

N to P: +2

P to S: +3

S to W: +4

W to B: +5

F to I: +3

I to L: +3

L to O: +3

O to R: +3

R to U: +3

T to S: -1

S to Q: -2

Q to N: -3

N to J: -4

J to E: -5

Thus, the missing term in the series will be BUE.

Thus, correct option is (b).