The argument here hinges on the authors assertion that a tool cannot be responsible for the assertion that a tool cannot be responsible for a bad presentation, and thus, the author concludes that user failures are responsible.
This is nonsense. A tool absolutely can be responsible for failures. If PowerPoint crashes and deletes my saved data, the tool was directly responsible. If the tool simply fails, the tool is responsible. It is also possible that a tool can be bad and contribute to a poor presentation, but also user error contributes. The author has wrongly assumed that a tool cannot be responsible for a bad outcome. We should be looking for an answer choice that matches that idea.
A does not, and I don't see claims that are internally contradictory. B does not, the author never took that for granted. C also does not, the author never endorses the tool D is a good match, it's a flaw here that the author ignores the fact that a tool can simply fail. E does not, the author doesn't do this.
