In a code language, ‘SOLID’ is written as “WPSLPIMFHA’. What does the code word ‘ATEXXQIBVO’ refer to?

The coding logic follows a pattern where each letter of the original word is represented by two letters in the code: the letter immediately following it and the letter immediately preceding it in the alphabet.

For the word SOLID: S is followed by T and preceded by R. However, looking at the code WPSLPIMFHA, we see the pattern is actually: (Letter + 4) and (Letter - 3). S + 4 = W, S - 3 = P. O + 4 = S, O - 3 = L. L + 4 = P, L - 3 = I. I + 4 = M, I - 3 = F. D + 4 = H, D - 3 = A.

Applying this to find the word for ATEXXQIBVO: The first letter of the word must satisfy: Letter + 4 = A and Letter - 3 = T. Counting back from A, the letter is W. The second letter must satisfy: Letter + 4 = T and Letter - 3 = E. The letter is A. The third letter must satisfy: Letter + 4 = E and Letter - 3 = X. The letter is T. The fourth letter must satisfy: Letter + 4 = X and Letter - 3 = Q. The letter is E. The fifth letter must satisfy: Letter + 4 = V and Letter - 3 = O. The letter is R.

The resulting word is WATER. Therefore, option D is correct.