It is imagery, repetition, tone
Answer:
2. Date
Explanation:
Some sources will state historic events, however if they were written a long time AFTER the events happen it is not credible because the person who wrote the source was not present at the time of the event.
Well a digression is a temporary departure from the main subject in speech or writing. So because the person writing the paragraph getting ill last year has nothing to do with this years cookie sale, I think you are correct, sentence 3 is an example of a digression. So D is the answer.
