Arrange the following steps in the process of implementing sustainable urban development: A. Assess the current energy footprint of existing structures B. Design new buildings using local and renewable materials C. Reuse existing structures to minimize energy waste D. Create policies that promote eco-friendly practices

The first step is to create policies that promote eco‑friendly practices, because clear rules guide every later action. Next, assess the current energy footprint of existing structures so planners know where the biggest problems lie. Then reuse existing structures to minimize energy waste, which saves materials and reduces construction emissions. Finally, design new buildings using local and renewable materials to finish the sustainable cycle. For instance, a city might pass green‑building ordinances, measure its old buildings’ energy use, retrofit them, and then construct new homes with bamboo and solar panels.