Which of the following is NOT a common methodology used in risk assessment?

Toxicity Analysis is not typically classified as a distinct methodology in the overall framework of risk assessment. Instead, it is often considered a component that contributes to the broader process. Risk assessment generally comprises four main methodologies: Hazard Identification, Exposure Assessment, and Risk Characterization.

Hazard Identification involves determining whether a particular agent can cause harm, while Exposure Assessment evaluates the extent to which individuals may come into contact with the agent. Risk Characterization combines the information from these areas to present a summary of the potential health risks associated with the exposure. Therefore, while Toxicity Analysis is an important aspect of understanding the harmful effects of substances, it is usually viewed within the context of Hazard Identification or as part of the data required for risk characterization rather than a standalone methodology.