Some people use the term to refer to the case that contains and protects the motherboard, internal hard drive, memory, and other electronic components of the computer from damage.

System unit.

Explanation:

Some people use the term system unit to refer to the case that contains and protects the motherboard, internal hard drive, memory, and other electronic components of the computer from damage.

A system unit also referred to as chassis or tower can be defined as a hardware case that is typically used as a protective case for the main component or primary devices such as power supply, random access memory (RAM), graphics card, CD-ROM drive, Harddisk drive, motherboard, internal cables, central processing unit (CPU) that makes up a computer system.

Basically, the main purpose of a system unit is to properly house the main components of a computer, serve as an electrical insulator and to prevent them from any form of damage.

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.