Which sentence shows the author's commitment to informing the reader?
a. when frightened, a person's heart pumps faster and adrenaline dilates his or her blood vessels.
b. the surprised children ran around the room like bats circling the ceiling of a pitch-black cave.
c. news of the tasmanian devil's escape caused adrenaline to pump through the zookeeper's veins.
d. after walking down the dark alley, the policeman was startled by his own shadow and tripped.

explanation:

if you’re a fan of chocolate, every occasion is right for this treat. feeling down? eat some chocolate. celebrating? eat some more. want to show your valentine how special you think your sweetheart is? offer up chocolate!   people have been enjoying chocolate as a food, drink and medicine for thousands of years. the ancient maya and aztecs called chocolate kakaw and used it as medicine. they also made chocolate offerings to their gods. chocolate comes from the cacao (kuh-kow) tree, and its scientific name reflects its history. theobroma cacao translates to “cacao, food of the gods.” these days, chocolate is not just for deities. the treat has become popular around the world.