sthahvi
I don't understand why the answer can't be C?
Let us parse the argument.
Dictation software allows a computer to produce a written version of sentences that are spoken to it.
Background /descriptive information due to absence of premise.
Although dictation software has been promoted as a labor-saving invention,
it fails to live up to its billing.
The laborious part of writing is in the thinking and the editing, not in the typing.
Premise 1
And proofreading the software’s error-filled output generally squanders any time saved in typing.
Premise 2
Argument: Premise + Conclusion.
Why the software fails to live up to its billing ?
Because Prem 1: The laborious part of writing is in the thinking and the editing, not in the typing
Moreover, because
Prem 2: And proofreading the software’s error-filled output generally squanders any time saved in typing.
Hence, pursuant to the C-answer, what is main conclusion, and what premise is buttressing it?
(C) It is an intermediate conclusion that is offered as direct support for the argument’s main conclusion.