Which property allows the use of an image as a bullet for unordered lists?

Which of the following Troubleshooting options in Windows 8.1 is used to remove apps that are not from the Windows Store, reinstall them, and keep user files and settings?

a. System Restore b. Refresh c. Reset d. Format

A ____________ holds only one data value at any given moment in time.

a. program b. data type c. method d. variable