Under the Philippine Environmental Impact Statement (EIS) System (PD 1586), a project found to be environmentally sound must obtain a/an:
Correct answer: C. Environmental Compliance Certificate (ECC)
PD 1586 of 1978 established the EIS System. Environmentally critical projects, and projects in environmentally critical areas, need an Environmental Compliance Certificate issued by the DENR's Environmental Management Bureau before they can proceed.