Which sentence uses the word chronological correctly?

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

What element of medieval literature does the disappearance of the sword into the lake represent?

Which characteristic of james baldwin’s “notes of a native son” qualify as a work of literary nonfiction