Answer:
The correct answer is "is unwilling to admit his mistakes.
"
Explanation:
Danforth is presiding over the Salem trials.
Although he knows that it has been a great mistake to hang 12 wrongfully accused people, he is not willing to admit his mistakes, for which he declares that he cannot forgive others.
Instead of admitting that it was a terrible mistake what happened, he keeps making it just because it would be "unfair" that twelve people have already been hanged for the same thing.
Well, it depends on the genre of that non-fictional book. For instance, a mystery book would make the audience interested if there was an unsolved mystery included, but an adventure book, for instance, might hook the reader if it was actually based on historical events and something like the book described had actually happened. Therefore, for a fictional book, I would say all of these interest me depending on the type of book.