Two factors determine risk when dealing with chemical hazards.

• A. Volume; Temperature
• B. Color; Odor
• C. Brand; Supplier
• D. Toxicity; Duration

Answer: (D)

Risk from chemical hazards is determined by the inherent hazard of the chemical (how toxic it is) and the exposure you experience (how long you are exposed). The toxicity defines the potential health effects if a dose is reached, while the duration of exposure controls the total amount of chemical you receive over time. A highly toxic substance can cause harm even at low doses, but shorter exposure may limit effects; conversely, a less toxic chemical can still pose significant risk if exposure is prolonged. Together, toxicity and duration capture both how dangerous the chemical is and how much exposure occurs, which is what drives risk. The other factors don’t directly define risk: volume and temperature can influence concentrations but aren’t the fundamental determinants; color or odor are just cues and don’t quantify hazard; brand or supplier doesn’t reflect the actual hazard or exposure in a given situation.