Answer:
B a textbook would be an example of a medium. Mediums are the way that a piece of writing is delivered to the reader meaning that a textbook is the only clear example of a medium there.
The bitter irony is that the people who perhaps most need and deserve to forgive themselves cannot. The necessary reflection and acknowledgment can be very difficult, because some people are burdened by forms of self-deception. Self-deception makes it difficult to identify when self-forgiveness is appropriate.
The cross section of a pyramid all the same sides
It is only generally accepted to use different verb tenses when writing it in mid-sentence is the events that you want to show or describe did not happen at the same time. This would clearly show the difference in the time on when the events occurred. The answer would be option B.