The correct answer is D. Immediate hypersensitivity
Step-by-step explanation:
Allergies are different conditions that occur when an organism is exposed to an allergen, which is a substance, elements, etc that leads to an abnormal immune response. Because of this, allergies are mainly explained as immediate hypersensitivity in the immune system as they usually occurred shortly after the organisms are exposed to the allergen and it is a. Types of allergies include allergies to food, allergic asthma, etc that lead to symptoms such as sneezing, swelling rashes, etc. Therefore, allergy to pollen as any other allergy is classified as an immediate hypersensibility.