"Sleeping is an effect of <span>Depressants, but agitation may cause a person to wake up"</span><span />
C. ">" denotes the end of an element. For instance <b>Hello!</b> or <hr />
Answer:
An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.
Explanation: