What tool or function did Kenny use in the following scenario?

Identifying the Tool

After right-clicking an icon on his taskbar, Kenny viewed the window that popped up and selected the name of the document he’d been working on all day.

I'd go with jump list

Jump List is a feature in Windows 7, Windows 8, and Windows 10 that allows you to view recent documents in a program pinned on your taskbar. Once Kenny has right-clicked an icon or a program pinned on the taskbar, a window will pop up and it will bring up a list of recently modified documents within that program that Kenny can choose from.