Hong Kong was ranked the second most sustainable city in Asia after Singapore according to Arcadis' Sustainable Cities Index (SCI) in 2018. Hong Kong obtained top marks in economic aspects but trailed in some other important parameters. A green group recently warned that the Hong Kong government might fail to reach the previously promised environmental goals, particularly waste reduction. The Hong Kong government definitely needs to take more actions to enhance the overall sustainability in a more balanced manner.

(a)What are the three systems of sustainable development and what characteristics a sustainable solution needs to hold? (3 marks)

(b)To reach a more balanced sustainable development, roles of what major groups need to be specially strengthened, and what means of implementation need to be adopted in particular? Please list at least TWO (2) major groups whose roles need to be strengthened, AND at least TWO (2) means of implementation that need to be adopted, with specific illustrations. (4 marks)

(c)What environmental laws and regulations need to be emphasized most for the Hong Kong government in face of the warning and concern [list at least THREE (3)]? (3 marks)