Your throat is dry, and you want the last cough drop in the box to last a long time in your mouth. What should you do? a. Keep the cough drop whole. This maintains the lowest surface-to-volume ratio, and slows the dissolution of the cough drop.
b. Break the cough drop into little pieces and put them all in your mouth. This decreases the surface-to-volume ratio, and slows the dissolution of the cough drop.
c. It doesn't matter if the cough drop is in one piece or many pieces; the total amount of cough drop is all that matters.
d. Break the cough drop into little pieces, put them all in your mouth, and drink plenty of water.