What literary device consists of a pair of contradictory words or ideas

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

Used for an event that has been completed before the present moment in time. simple past past perfect perfect progressive past perfect progressive

Question 12(multiple choice worth 2 points) the arrangements of elements in a photograph is called aperture focus composition framing