The taking of hazardous materials into the body through undamaged skin and the eyes is called:

• A. Ingestion
• B. Absorption
• C. Inhalation
• D. Injection

Answer: (B)

The key idea is how hazardous materials can enter the body. Absorption is the process where a chemical crosses the skin or eye surfaces and enters the bloodstream, even through undamaged skin. This is why touching hazardous substances or getting them in the eyes is a concern—some materials can permeate the skin or eye tissues and cause systemic effects. In contrast, ingestion involves swallowing a substance into the digestive system, inhalation is breathing it into the lungs, and injection is a direct entry into tissue or the bloodstream through a puncture. So the route described as entering the body through the skin and eyes is absorption.