Which of the following is a method of absorption exposure?

The correct choice is based on the definition of absorption exposure, which refers to the process of a hazardous material entering the body through direct contact with the skin or eyes. When a substance comes into contact with these surfaces, it can penetrate the skin or mucous membranes, leading to potential systemic effects. This is particularly critical in situations involving hazardous materials because some chemicals can be absorbed into the bloodstream quickly, causing harmful health effects.

In contrast, other forms of exposure work differently. Breathing in hazardous vapors involves inhalation exposure, where chemicals enter the respiratory system. Swallowing harmful substances is categorized as ingestion exposure, which involves materials entering via the digestive system. Receiving a puncture wound is considered injection exposure; it involves materials entering through a breach in the skin barrier due to a piercing object. Thus, while all of these involve hazardous materials, only contact with skin or eyes specifically falls under absorption.