A sociologist proposes that long-term economic mobility in a region is shaped less by the average income of the area in which a child grows up than by the level of social interaction across income groups within that area.
Which finding, if true, would most strongly support the sociologist's proposal?
- A
Public spaces are funded by local governments.
- Bcheck_circle
Across regions with similar average incomes, children growing up in neighborhoods where lower- and higher-income residents shared schools and public spaces had significantly higher adult earnings than children in neighborhoods where income groups were largely separated.
- C
Average regional income has changed in many parts of the country over recent decades.
- D
Some neighborhoods have higher income inequality than others.
Explanation
A holds regional income roughly constant and varies cross-income interaction, isolating it as the predictor of mobility. B, C, and D are general or tangential.