Answer:
C.) store data securely would be my choice
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An ordered list.
<ol>
<li> This is the first item.
<li> This is the second item.
</ol>
Advntage:
provides CPU scheduling, memory management, file management, and other operating system functions through system calls. The other one is that it is a single large process running entirely in a single address space.
Disadvantage: if anyone service fails it leads to an entire system failure
