Which of the following is a common challenge faced by urban areas?

Traffic congestion is indeed a common challenge faced by urban areas. As cities expand and populations grow, the number of vehicles on the road tends to increase significantly. This leads to bottlenecks and delays, making it difficult for residents to commute efficiently. Traffic congestion can have various negative impacts, including increased travel time, elevated stress levels among commuters, and greater environmental pollution due to idling vehicles.

In contrast, an abundance of green spaces is typically seen as a benefit to urban areas, promoting quality of life and environmental health. High resident satisfaction rates suggest that urban challenges are being effectively managed, which is not a common scenario for many cities facing issues like overcrowding and insufficient infrastructure. Low levels of pollution are also generally not associated with urban areas historically, as industrial and vehicular emissions tend to contribute to higher pollution levels in densely populated settings.