n what way did growing suburbs contribute to the decline of cities? Group of answer choices a. Many cities lost valuable tax bases as middle class white families left urban environments in favor of suburban living, leaving only lower class and less wealthy populations in the cities. b. Commerce and industry, and therefore economic opportunity moved from cities to suburbs to reach the larger economic base in their new homes. c. Those that remained behind in cities were often minorities from lower socioeconomic backgrounds and did not have the revenue needed to support the cities commerce and industry that remained. d. both a and b e. all of the above