Q93
Single choice
A favorable biography of a politician omits certain incriminating facts about the politician that were available to anyone when the book was written. The book's author claims that, because he was unaware
of these facts when he wrote the book, he is not accountable for the fact that readers were misled by this omission. In a biographer, however, ignorance of this kind cannot be used to evade blame for misleading readers.
Which one of the following principles, if established, does most to justify the position advanced by the passage?