In the first passage about urban planning, what is the main idea of green corridors in addressing urban heat islands?

• A. Green corridors are too costly to implement in most cities.
• B. Green corridors have potential benefits but require careful planning and resources.
• C. Trees alone can solve urban heat problems without government support.
• D. Urban heat islands are not a significant issue in modern cities.

Answer: (B)

Green corridors can help cool cities by creating shade, increasing evapotranspiration, and linking green spaces so heat can be absorbed and dispersed more effectively. The best choice recognizes that these corridors hold real promise, but their success depends on thoughtful design and sufficient resources—planning where to place them, which species to use, how to connect existing parks and streets, how to manage water and maintenance, and securing funding. Without that careful planning and investment, the cooling benefits may be limited or unsustainable. The other statements miss important realities: trees alone don’t eliminate heat without support and upkeep; implementing such projects typically requires planning and resources, not just a willingness to plant; and urban heat islands are a real and ongoing concern in modern cities.