What is Equiano's message to the Christians?

Which two sentences in this excerpt from theodore dreiser my brother paul are examples of characterization that suggest paul is a superstitious person?

How can behavioral science be applied in improving public health? a.by tracking a disease to determine its sourceb.by creating promotions that improve health habitscboth by tracking a disease to determine its source and by creating promotions that improve health habitsd.neither by tracking a disease to determine its source or by creating promotions that improve health habits

During the medieval period wich group played an important role in staging