Answer:
Option B
Explanation:
Clearly, the individual letters of the terms of the given series follow the pattern shown below:
1st letter: $ A + 3 \rightarrow D, D + 4 \rightarrow H, H + 5 \rightarrow M, M + 6\rightarrow S, S + 7\rightarrow Z$
2nd letter: $B + 5 \rightarrow G, G + 6 \rightarrow M, M + 7 \rightarrow T, T + 8\rightarrow B, B + 9\rightarrow K$
3rd letter: $D + 7 \rightarrow K, K + 8 \rightarrow S, S + 9 \rightarrow B, B + 10\rightarrow L, L + 11\rightarrow W$
Thus, the missing term is ZKW. Hence, the answer is (b).