Which component assesses how much of a chemical people might be exposed to?

• A. Hazard identification.
• B. Dose-response assessment.
• C. Exposure assessment.
• D. Risk characterization.

Answer: (C)

Exposure assessment estimates how much of a chemical people might be exposed to by looking at where the chemical is, how people contact it (inhalation, ingestion, dermal), how long and how often exposure occurs, and which groups are exposed. This is exactly about quantifying the potential contact and the resulting dose people could receive, using measured concentrations, environmental models, and population data. It sets the stage for understanding risk by providing the exposure part of the equation.

Hazard identification asks what adverse effects a chemical can cause. Dose–response assessment links the amount exposed to the likelihood or severity of those effects. Risk characterization combines hazard information with exposure and dose–response data to describe overall risk.