The verified answer to “In a certain code, MUSIC is written as NFHRX. How will GARDEN be written in that code?” is TZIWVM, option B. The source working states: Correct answer: TZIWVM (Option C). Apply the same unchanged rule to GARDEN: G→T, A→Z, R→I, D→W, E→V, N→M. Therefore the required code is TZIWVM. Wrong options: HBSEFO is wrong because it does not reproduce the verified rule at every position; ICTFGP is wrong because it does not reproduce the verified rule at every position; FZQCDM is wrong because it does not reproduce the verified rule at every position. Even one mismatched position invalidates a code, so only Option C is correct. This observation must be confirmed across every available letter position or every consecutive term before it is applied to the missing code. Applying the verified rule to the target expression produces TZIWVM. The alternatives ICTFGP, FZQCDM and HBSEFO fail because at least one position does not obey the same transformation. A useful final check is to map TZIWVM backward through the inverse operation and confirm that the original target is recovered.