EMERGENCY! Please give me the correct answer!

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

Is the following statement true or false? the topic sentence of a paragraph should indicate what the paragraph is going to be about. false true

Need answer asap plz! in “ode to the west wind,” which image best expresses the speaker’s hopes for the west wind? a. “scatter, as from an extinguished hearth / ashes and sparks . .” b. “make me thy lyre, even as the forest is . .” c. “. . he lay, / lulled by the coil of his crystalline streams . .” d. “if i were a dead leaf thou mightest bear . .”