Which statement BEST reflects handling guidelines for high‑risk substances?

• A. They require specific and detailed assessments and control methods
• B. They require only basic PPE
• C. They require no protection
• D. They can be ignored in routine handling

Answer: (A)

High‑risk substances demand a careful, documented approach to safety. You must perform a formal risk assessment to identify how exposure could occur and what hazards are present, then put in place control methods that are specifically tailored to those risks. This means choosing appropriate engineering controls (like closed systems or dedicated ventilation), administrative controls (clear procedures, training, supervision), and PPE that is suitable for the particular substance and route of exposure. Storage, handling procedures, spill response, and waste disposal also get defined and documented.

Why this is the best fit: it captures the need for a deliberate, substance‑specific plan rather than relying on generic protection or ignoring risk. Basic PPE alone cannot cover all hazards, and ignoring risk or treating routine handling as nonessential would be unsafe and noncompliant.

In short, managing high‑risk substances is about specific hazard identification and tailored control measures, not broad or minimal protection.