Concept:Each letter is replaced by the previous letter in the alphabet (cyclic).Explanation:T (20) → S (19) is -1.A (1) → Z (26) is -1 (cyclic).P (16) → O (15) is -1.So FRIEND becomes:F (6) → E (5)R (18) → Q (17)I (9) → H (8)E (5) → D (4)N (14) → M (13)D (4) → C (3)Result: EQHDMC.Answer:D. EQHDMC