If ROBUST is coded as QNATRS in a certain language, which word will be coded as ZXCMP?

To find the pattern, compare ROBUST with its coded form QNATRS:

R → Q

O → N

B → A

U → T

S → R

T → S

Each letter shifts backward by 1 position in the alphabet.

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To find which word codes to ZXCMP, reverse the process by shifting each letter forward by 1 position:

Z → A (wrapping around from Z to A)

X → Y

C → D

M → N

P → Q

The original word is AYDNQ.

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Verification using the coding pattern on AYDNQ:

A → Z (shifting backward by 1, wrapping around)

Y → X

D → C

N → M

Q → P

This gives ZXCMP ✓

Therefore, the answer is Option 2: AYDNQ.

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NTA has marked Option 2 right.