What does the umbrella look like after Gloria and Davis finish wrapping it?

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

Aspy novel would probably be a novel of

Why does the narrator come to the house of usher