A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
NIE, QLH, TOK, WRN, ?​​

Given: NIE, QLH, TOK, WRN, ?​​

Logic: Letters are increasing + 3 place.

First letter: N + 3 = Q, Q + 3 = T, T + 3 = W, W + 3 = Z

Second letter: I + 3 = L, L + 3 = O,O + 3 = R, R + 3 = U

Third letter: E + 3 = H, H + 3 = K, K + 3 = N, N + 3 = Q

So, the missing term is ZUQ.

Thus, correct option is (d).