How do pesticides typically enter the body of humans or animals?

Pesticides can enter the body of humans or animals through multiple pathways, which is why the correct choice highlights inhalation, ingestion, and skin absorption as the methods of entry.

When pesticides are applied in the environment, they can form aerosols that may be inhaled when an individual is nearby. Ingestion occurs when residues are consumed accidentally, often through eating contaminated food, drinking contaminated water, or unintentional consumption of pesticide-laden substances. Skin absorption is another significant route, especially in occupational settings where individuals may come into direct contact with pesticide formulations.

The broad range of exposure methods emphasizes the importance of practicing safety measures and understanding the behavior of pesticides in different environments to minimize health risks. The other options are limited in scope and fail to acknowledge the full spectrum of exposure routes associated with pesticide use.