Which kind of adverb is the underlined word in the sentence?
several firefighters moved swiftly through the hallway

d.) then bernice winced as marjorie tossed her own hair over her shoulders and began to twist it slowly into two long blond braids until in her cream-colored negligée she looked like a delicate painting of some saxon princess. fascinated, bernice watched the braids grow. heavy and luxurious they were, moving under the supple fingers like restive snakes—and to bernice remained this relic and the curling iron and a to-morrow full of eyes.

the answer is a)   a sentence of death costs the state "almost three times as much as a sentence of life in prison" (delon 147)