Final answer:
Gentrification is favored by city leaders as it's believed to decrease crime, create jobs, and increase property taxes, but it can displace less affluent residents and worsen traffic and pollution.
Step-by-step explanation:
Gentrification is a process that occurs when middle and upper-class residents move into formerly working-class neighborhoods, thus transforming the area and increasing property values. City leaders often embrace gentrification for several reasons: it is seen as a means to help lower crime in inner-city areas, bring jobs to those locales, and boost property taxes which benefits the city's finances. However, gentrification can also lead to displacement of less affluent residents, push them into less desirable areas, and exacerbate traffic and pollution issues.