Answer:
From my point of view, I would say Jurors 3, 10, and 12 are most stubborn because, juror 3 is so dogmatic, juror 10 is somewhat like a bigot and 12 is just business man who sees everything ambiguously.
One instance of foreshadowing occurs when Emily Grierson buys arsenic from the pharmacist. According to the narrator, Emily is a haughty aristocratic who thinks she is better than most of the other townspeople. Emily uses her demeanor to bully the druggist into selling her poison.
A. Detective. Reason being is because they get promotions. My source is the movies that I watch on TV.