What is the precautionary principle in environmental governance?

• A. The precautionary principle states that when actions may cause severe or irreversible harm, lack of full scientific certainty should not delay precautionary measures.
• B. Scientific certainty is required before any precaution is taken.
• C. Precautionary measures should be avoided to not hinder progress.
• D. Economic costs should always override environmental concerns.

Answer: (A)

When actions might cause serious or irreversible harm, the precautionary principle says we shouldn’t wait for perfect scientific certainty to act; protection should be taken based on the best available evidence to prevent harm now. This means measures can be precautionary even if some details are uncertain, and the emphasis is on avoiding potential damage rather than waiting for full proof. It also often involves weighing risks and applying proportionate, flexible actions rather than delaying action until certainty is achieved.

That’s why the statement describing taking precautionary measures despite lack of full certainty in the face of potential severe harm is the best fit. The other ideas—requiring certainty before acting, avoiding precautions to keep progress, or letting economic costs always override environmental concerns—do not align with this proactive, risk-averse approach to environmental protection.