Which excerpt from a princess of mars most supports the conclusion that the narrator is reckless? a. it therefore now occurred to me that the surest way of learning the exact attitude of this beast toward me would be to attempt to leave the room. b. furthermore, i could see from the shortness of his legs that the brute himself was no jumper and probably no runner. c. evidently his mission was to protect me only, i thought, but when we reached the edge of the city he suddenly sprang before me, uttering strange sounds and baring his ugly and ferocious tusks. d. as i was to learn, this is the fleetest animal on mars, and owing to its intelligence, loyalty, and ferocity is used in hunting, in war, and as the protector of the martian man.

Read this excerpt from "edward jenner and the history of smallpox and vaccination.” smallpox was introduced to europe sometime between the fifth and seventh centuries and was frequently epidemic during the middle ages. the disease greatly affected the development of western civilization. the first stages of the decline of the roman empire (ad 108) coincided with a large-scale epidemic: the plague of antonine, which accounted for the deaths of almost 7 million people. the arab expansion, the crusades, and the discovery of the west indies all contributed to the spread of the disease. unknown in the new world, smallpox was introduced by the spanish and portuguese conquistadors. the disease decimated the local population and was instrumental in the fall of the empires of the aztecs and the incas. similarly, on the eastern coast of north america, the disease was introduced by the early settlers and led to a decline in the native population. before it reached the new world, smallpox played a role in