A student researching cities has taken notes:
• Ancient Rome may have had 1 million residents • Modern megacities exceed 10 million people • Urban planning addresses housing, transport, and services • Cities generate most economic activity • Urban sprawl creates environmental challenges
4
readingThe student wants to show how cities have changed over time.
A
Cities generate the majority of economic activity.
B
Cities have grown enormously over time—from ancient Rome's million residents to modern megacities of over 10 million, requiring sophisticated urban planning.
C
Urban sprawl creates significant environmental challenges.
D
Urban planning addresses housing, transportation, and services.
Correct Answer: B
Choice B. Rome's million to modern 10+ million shows change over time.