Write a essay about a way you have used mathematics outside of school ik its so much to ask for but im swamped with work and trying to get things done i would appreciate it if anybody helped even a bit T_T

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