9. more than 60% of journeys in mexico city o...
9. more than 60% of journeys in mexico city occur via public transit, but simply reproducing a feature of the city’s transit system—e.g., its low fares—is unlikely to induce a significant increase in another city’s transit ridership. as erick guerra et al. have shown, transportation mode choice in urban areas of mexico is the product of a complex mix of factors, including population density, the spatial distribution of jobs, and demographic characteristics of individuals. system features do affect ridership, of course, but there is an irreducibly contextual dimension of transportation mode choice. which choice best describes the function of the underlined portion in the text as a whole? a) it presents an objection to the argument of guerra et al. about transportation mode choice in urban areas of mexico. b) it explains why it is challenging to influence transit ridership solely by altering characteristics of a transit system. c) it illustrates the claim that a characteristic associated with high transit ridership in mexico city is not associated with high transit ridership elsewhere. d) it substantiates the assertion that population density, the spatial distribution of jobs, and demographic characteristics are important factors in transportation mode choice.