In case of hazardous materials, which route of entry is NOT possible?

In the context of hazardous materials, understanding the routes of entry into the body is crucial for safety and health management. The option stating "Only oral ingestion" is accurate in indicating that oral ingestion is not the exclusive route of entry for hazardous materials. While hazardous substances can indeed enter the body through ingestion, they also pose risks through inhalation, absorption through the skin, and injection.

Inhalation and absorption are common routes of entry for many hazardous materials, as they can easily penetrate through respiratory pathways and skin barriers, respectively. Injection refers to the direct entry of substances into the bloodstream, which is also a relevant route for certain biological agents or chemical exposures.

The phrasing "only oral ingestion" suggests a limitation that does not accurately capture the potential for other routes, making this option the one that does not align with the comprehensive risks posed by hazardous materials.