If ZERO is encoded as ADSN, then how do you encode STOP?

Correct Answer: (B) TSPO

In the encoding of ZERO to ADSN, the positional shifts are alternating: Z (+1) $\to$ A, E (-1) $\to$ D, R (+1) $\to$ S, and O (-1) $\to$ N. Applying the identical alternating rule $+1, -1, +1, -1$ to the word STOP: S (+1) $\to$ T, T (-1) $\to$ S, O (+1) $\to$ P, and P (-1) $\to$ O. Thus, STOP is encoded as TSPO.