Question

in the postwar era, the increased availability and affordability of cars most facilitated which social change?
o the end of public transportation
o the decline of cities
o the increase of women in the workforce
o the growth of suburbs

Explanation:

After World War II, cars became more available and affordable. People could live farther from city centers. Suburbs are residential areas on the outskirts of cities. With cars, commuting from suburbs to cities for work became easier. Public transportation didn't end. The decline of cities isn't mainly due to cars (cities still had economic and cultural importance). The increase of women in the workforce was more related to social and economic changes (like labor market needs, women's rights movements) rather than cars as the main factor.

Answer:

the growth of suburbs