<span>4.Tragedy can cause people who are enemies to forgive each other.</span>
D. It is the Authors attempt to use autobiographical incident to share valuable wisdom.
For example you can say:
Dear Friend(or make up a name)
Today I went to the debate competition finals and it was amazing! We went against this school named (school name) and the competition was intense.
Or something like that, just giving you an idea. Make sure to add descriptive words and make sure to apply if you won or you lost.
The answer is ABCB
Hope this helps