Case Study: You are the chief town planner of a burgeoning metropolis. A builder consortium proposes an upscale residential township on a designated flood catchment basin. To secure clearance, they submit fraudulent environmental clearance certificates and offer you an expensive penthouse. They also imply that your career progression will be stalled if you raise red flags. (a) What are the professional and ethical challenges before you? (b) How will you proceed to protect urban ecological safety?