- ATKOO
- BTJMN
- CTKNO
- DUKOO
Step-by-Step Solution
The letters move forward by 1, 2, 3, 4 (G→H, O→Q, L→O, D→H). SILK → S+1 = T, I+2 = K, L+3 = O, K+4 = O: TKOO.
Answer: A) TKOO
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