Operating System (OS)
The term "operating system" means

the way a floppy disk drive operates
None of these
the way a computer operator works
a set of programs which controls computer working
conversion of high level language into machine code

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Operating System (OS)
The advantage(s) inherent to using high level languages is (are)

A greater degree of machine independence
Improved debugging capability, and superior documentation
All of these
Fewer people, less management and shorter transition in learning time
None of these

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