Which of the Following Describes the Precautionary Principle

Which of the following describes the precautionary principle?

A) A polluter should bear the expense of carrying out pollution prevention and control measures.
B) A strong, just, and wealthy society can be consistent with a clean environment.
C) Preventive measures should be taken when an activity raises threats of harm to the environment.
D) All people in society should receive equal treatment with respect to environmental laws and policies.
E) None of these is correct.