Language Processors
The advantage(s) of incorporating the macro processor into pass 1 is/ are:

All of these
more flexibility is available to the programmer in which he/she may use all the features of the assembler in conjunction with macros
Functions are combined and it is not necessary to create intermediate files as output from the macro processor and input to the assembler
many functions do not have to be implemented twice

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Language Processors
Assembler is

a program that automate the translation of assembly language into machine language
a program that places programs into memory and prepares them for execution
is a program that appears to execute a source program as if it were machine language
a program that accepts a program written in a high level language and produces an object program

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