Answer:
A.in the troubleshooting section
Step-by-step explanation:
Appearance and personalization is a category or set of tools which is found in the control panel in the start menu of windows.
Appearance and personalization allow the user to use various tools like customization of windows, change the theme, screen savers, file explorer options, navigation buttons, ease of access centre, change fonts etc.
The appearance and personalization category is present as the sixth panel of the control panel. The troubleshooting section allows the user to open the control panel from which appearance and personalization category can be opened.
Thus, Option-A is the correct answer.