Final answer:
Dermal exposure is the most common route of pesticide exposure, where chemicals come into contact with the skin and can be absorbed into the bloodstream.
Step-by-step explanation:
The most common route of pesticide exposure is dermal exposure, which occurs when chemicals come into contact with the skin. Pesticides can be absorbed through the skin and enter the bloodstream, leading to potential health problems. Examples of dermal exposure include when a person handles pesticide products without proper protection or when pesticide residues are present on surfaces that a person touches.