Which of the following is NOT a route of exposure for hazardous materials?

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

Answer: (C)

The correct response is based on recognizing that it is not typical for "injection" to be considered a common route of exposure in the context of hazardous materials.

Inhalation refers to breathing in hazardous substances, which can lead to immediate or chronic health effects depending on the material and the duration of exposure. Absorption involves substances entering the body through the skin, where they can then enter the bloodstream and cause health problems. Both of these routes are well-known in HAZMAT training.

Injection, while it is a valid medical route for administering substances, is not typically classified as a method of exposure in terms of hazardous materials. Instead, in HAZMAT contexts, exposure routes are more concerned with how materials enter the body and affect health through inhalation, absorption, or ingestion. Therefore, identifying injection as not fitting within the traditional exposure routes emphasizes the focus on more common methods encountered during hazardous materials incidents.