Q6.In a certain code language, ROBUST is coded as QNATRS. In the same language…

Key rule: Replace each letter with the previous letter in the alphabet (shift -1).

Apply this rule to ZXCMP:

• Z → Y

• X → W

• C → B

• M → L

• P → O

So ZXCMP becomes YWBLO.

Therefore the correct answer is YWBLO.