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The correct answer to the question is:
- Irritation reaction.
Explanation:
1. When a pesticide causes redness, swelling, or blistering of the skin, it indicates an irritation reaction.
2. Irritation reactions occur when pesticides come into direct contact with the skin and cause a localized inflammatory response.
3. These reactions are often non-allergic and can happen immediately upon exposure to the pesticide.
4. Symptoms of irritation reactions can include redness, itching, swelling, and sometimes blistering of the skin.
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