What should come in place of '?' in the given series based on the English alphabetical order?
HNB, KQE, NTH, QWK, ?

Given: HNB, KQE, NTH, QWK, ?

Logic: Each letter in the term increases by + 3 in every position.

First letters:
H + 3 = K, K + 3 = N, N + 3 = Q, Q + 3 = T

Second letters:
N + 3 = Q, Q + 3 = T, T + 3 = W, W + 3 = Z

Third letters:
B + 3 = E, E + 3 = H, H + 3 = K, K + 3 = N

So, the next term is : TZN

Thus, the correct option (b) TZN.