OG3 阅读 Q19

Choice A is the best answer. Figure 1 shows that 10.7% of public transpor-tation passengers are students and 6.7% of public transportation passengers are retirees. Thus, more students than retirees use public transportation.
Choices B and C are incorrect because figure 1 shows that more employed than unemployed people use public transportation and that more employed people than homemakers use public transportation. Choice D is incorrect because figure 1 does not explain how frequently passengers use public transportation; it only identifies public transportation passengers by their primary occupation.