Which sentence uses commas correctly? a. we use our oven for broiling baking, roasting, and warming. b. the factory makes doors windows and blinds. c. pines, hemlocks, and firs, are all softwoods. d. the fox ran across streams, through woods, and over meadows.

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