Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
SPM 8, TQN 14, URO 20, VSP 26, ?​

Given: SPM 8, TQN 14, URO 20, VSP 26, ?​

Logic: Letters are increasing + 1 and number is increasing + 6 place.

For, letter

S + 1 = T, T + 1 = U, U + 1 = V, V + 1 = W

P + 1 = Q, Q + 1 = R, R + 1 = S, S + 1 = T

M + 1 = N, N + 1 = O, O + 1 = P, P + 1 = Q

For, number

8 + 6 = 14, 14 + 6 = 20, 20 + 6 = 26, 26 + 6 = 32

So, the missing term is WTQ 32.

Thus, correct option is (c).