Jetta wonders how she is doing in her class. at first, she thinks she is doing well because she is getting a "b." then she finds out that nearly every other person in the class is getting an "a" and she feels less happy. the theory of explains why jetta feels less happy once she finds out how others are doing in the class, too.

In 1914, alabama produced 1.7 million bales of cotton, but three years later produced only 515,000, bales. meanwhile, in georgia, 5.2 million acres of land was dedicated for cotton production in 1914, but by 1923 there were just 2.6 million acres used for growing cotton. all of this was the result of the work of a tiny insect: the boll weevil. alabama and georgia first felt the effects of the boll weevil at different times. what would account for this difference in timing? a) the infestation moved from west to east. b) the infestation moved from east to west. c) georgia had better ways to deal with the problem. d) alabama was further from the insect's point of origin.