The question asks you to put a tick mark on the different option among (a) D, (b) h, (c) Y, and (d) Z.
To determine the different option, we need to compare the letters and identify the one that stands out or does not fit with the others.
Upon comparing the letters, we can see that (b) h is the different option.
The reason is that the other options (a) D, (c) Y, and (d) Z are uppercase letters, while (b) h is a lowercase letter. This difference in case makes (b) h different from the other options.
So, to mark the different option, put a tick mark on (b) h.