The city's rapid expansion, while bringing unprecedented economic growth, has also resulted in a growing social ______, with affluent newcomers often remaining ______ to the struggles of long-time residents.
✓ Correct Answer: Option B
Rapid growth with 'affluent newcomers' versus 'struggles of long-time residents' suggests a negative social divide, making 'disparity' fit. The newcomers' lack of awareness implies they are 'oblivious' to these struggles.