While reading his favorite outdoor sports magazine, Jeff sees an advertisement for a new camping tent that is designed for quick setup. At the bottom of the page is a black-and-white square. Using an app on his phone, Jeff scans the square and a video displays on his phone's screen showing how easy the tent is to set up. The item that Jeff scanned on his phone is called a(n).

QR code

Explanation:

QR code stands for Quick Response code.It is also known as Barcode and was first designed in 1994. It is made up of black squares lined up in a square grid usually on a white background and are read by a camera etc.

QR codes often contain data for a locator, identifier, or tracker that directs one to a website or application and it uses four encoding modes namely:numeric, alphanumeric, byte/binary, and kanji to store data competently.

answer is:

a). backstage view

explanation:

backstage view is the area where files and data about them is managed— creating, saving, printing, sending to others, inspecting for hidden metadata or personal information, and setting options. so in this way we can add many things to our document swiftly.

i hope you get the idea.