Exposure to pesticides through the mouth is categorized as which of the following routes?

Exposure to pesticides through the mouth is categorized as ingestion. This route of exposure involves taking in substances through the digestive system, which can occur when pesticides are accidentally swallowed or when food or water contaminated with pesticides is consumed. Ingestion is significant because it can lead to systemic effects throughout the body as the pesticide enters the bloodstream after passing through the digestive tract.

Inhalation refers to exposure through the respiratory system, where pesticides are breathed in. Dermal exposure occurs when pesticides come into contact with the skin, and injection involves delivering substances directly into the body, usually through a needle or similar device. Each of these routes of exposure can have different implications for health and safety, but ingestion specifically highlights the risks associated with oral consumption of harmful substances.