Operating System (OS)
The primary purpose of an operating system is to:

make the most efficient use of the hardware
make computer easier to use
keep system programmers employed
None of these
allow people to sue the computers

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Operating System (OS)
The advantage(s) of incorporating the macro processor into pass 1 is(are):

None of these
more flexibility is available to the programmer in that he may use all the features of the assembler in conjunction with macros.
All of these
Functions are combined and it is not necessary to create intermediate files as output from the macros processor and input to the assembler.
many functions do not have to be implemented twice.

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