Choose the odd one out.

The answer is E, XYZA.

In each of the other options, the letters are in alphabetical order, except for the first and last letters. For example, in A, XZCG, the letters are in alphabetical order from X to Z, except for the first letter, X, and the last letter, Z.

In E, XYZA, the letters are not in alphabetical order. The first letter is X, the second letter is Y, the third letter is Z, and the fourth letter is A.

Therefore, E is the odd one out.