Operating System (OS)
Advantage(s) of using assembly language rather than machine language is (are):

All of these
It is mnemonic and easy to read.
None of these
Addresses any symbolic, not absolute
Introduction of data to program is easier

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

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

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