Final answer:
Subways and elevated trains revolutionized urban transportation by enabling people to reside in one area and work in another, leading to the expansion of suburbs and the separation of residential and commercial districts.
Step-by-step explanation:
Impact of Subways and Elevated Trains on Urban Transportation
The introduction of subways and elevated trains dramatically altered urban transportation by enabling a more efficient transit system within cities. They facilitated the movement of people by bridging residential areas with business and industrial districts. This innovation allowed populations to live farther from their workplaces, significantly contributing to the growth of suburban areas. As cities expanded, subways and elevated trains played a crucial role in connecting different urban zones while bypassing the congested streets above ground.
Which of the following statements best explains how subways and elevated trains changed urban transportation? The answer is C) They allowed people to live in one area and work in another. This flexibility supported the development of suburban living, thereby allowing for a daily commute that did not depend on close proximity to one's place of employment. The improved transportation system reduced the need for people to reside within walking distance of their jobs, allowing for a separation of residential and commercial districts and the rise of the suburbs.