Ok, maybe I'm just caught up in semantics, or I've not correctly identified all the parts of this argument.
I know that the "dictation software fails to live up to its billing" is the main conclusion. My question is that the last sentence seems to me to be an intermediate conclusion; The laborious part is the thinking and editing therefore "proof reading the error filled output squanders any time saved in typing". It seems to live up to the "Therefore Test".
Am I wrong that it's an intermediate conclusion? The correct answer, B, is straightforward in that it's the ONLY conclusion. I chose A, that it's the main, but not the ONLY. So either I don't know how to completely recognize intermediate conclusions.... or, I'm easily fooled by semantics.
Help......