In exposure assessment, which factors are considered?

• A. Intensity, duration, frequency, probability
• B. Temperature, pressure, humidity, wind
• C. Age, gender, clothing, mood
• D. Color, odor, taste, texture

Answer: (A)

Exposure assessment focuses on how much contact a person has with a hazard and under what conditions. The key factors are the level of exposure (intensity), how long it lasts (duration), how often it occurs (frequency), and how likely exposure is to happen (probability). Together, these determine the overall amount of exposure a person could receive.

Environmental conditions like temperature, pressure, humidity, and wind influence how a contaminant moves or persists, so they matter for modeling exposure but aren’t the direct factors that define the exposure magnitude. Aspects like age, gender, clothing, mood, or sensory properties such as color, odor, taste, and texture don’t set the exposure amount themselves; they may relate to susceptibility or perception, not the actual exposure quantity.