Technically, to be called a , a device must convert digital signals (such as those used by a computer) to modulated analog signals (such as those used by conventional telephone lines) and vice versa.

A Modem

Explanation: A modem is a hardware device that converts data into a format that is suitable for transmission.

It can convert digital signals to analog signals if required.

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.