Answer:
The correct answer is "is unwilling to admit his mistakes. "
Step-by-step 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.