What is the core purpose of the E3R framework?

• A. To identify hazards only.
• B. To structure the assessment by integrating exposure scenarios with adverse effects to characterize overall risk.
• C. To measure exposure levels only.
• D. To replace dose–response modeling.

Answer: (B)

The main concept being tested is how the E3R framework structures risk assessment by linking realistic exposure scenarios to potential adverse effects in order to characterize overall risk. It emphasizes integration: you consider who is exposed, under what conditions, and for how long, then connect that exposure to the dose–response information for the substance to determine the likelihood and severity of harm. This approach goes beyond simply identifying hazards or measuring exposure in isolation; it brings exposure data and toxicological effects together to produce a clear risk characterization that informs decisions. It does not aim to identify hazards alone, nor does it measure exposure in isolation, and it does not replace dose–response modelling—dose–response information remains a key part of translating exposure into potential effects within the framework.