______ of an allergen is the best way to prevent allergy.

Prevention of allergy:

1. The best way to prevent allergy is to avoid the entry of allergens into the body.
2. If someone is allergic to peanuts, he should avoid eating peanuts to avoid allergic reaction.
3. Similarly, if someone is allergic to dust, he should avoid going out in dusty areas or wear a mask to cover the face.

Avoidance of an allergen is the best way to prevent allergy.