Answer: b. Microsoft Update
Step-by-step explanation:
A Microsoft update is also known as windows update or Microsoft windows update. It is a free service that is used for update in a Microsoft software or windows operating system, such service or updates includes service packs, patches for windows operating systems.
It is also used to update some drivers, securities in hardware devices. Windows update helps to keep Microsoft programs updated, such updates helps to protect windows from malicious attacks and malware such as viruses and other things, know about new product and features in an operating system, etc.
Types of Microsoft windows operating system includes windows 7,8,10, windows 98, windows XP etc.