Which of the following is NOT a way chemicals can enter the body?

The assertion that "none of the above" pertains to methods by which chemicals can enter the body implies that all the listed options—Inhalation, Ingestion, and Skin contact—are indeed valid routes of chemical exposure.

Inhalation refers to the breathing in of chemicals, such as gases or vapors, which can directly enter the bloodstream through the lungs. Ingestion denotes the consumption of substances, where chemicals enter the digestive system and subsequently the bloodstream. Skin contact involves chemicals being absorbed through the skin, which can also lead to systemic effects depending on the nature of the chemical and duration of exposure.

Since all the options describe legitimate pathways for chemicals to enter the body, the conclusion that "none of the above" is an accurate choice highlights that there are no exceptions to these methods listed. Thus, the correct understanding of how chemicals can enter the body is reinforced.