Explanation
A: Aberrant Functioning Of The Immune Mechanism is associated with hypersensitivity to an allergen.
Hypersensitivity is an exaggerated immune response to a foreign substance (allergen) that is harmless to most people. In people with hypersensitivity, the immune system identifies the allergen as a threat and produces an inappropriate immune response, leading to symptoms such as sneezing, itching, hives, and in severe cases, anaphylaxis.
Option B is incorrect because an increase in ambient temperature is not associated with hypersensitivity to an allergen.
Option C is incorrect because age is not a direct factor in hypersensitivity to an allergen. However, some types of allergies may be more common in certain age groups.
Option D is incorrect because food habits may influence the development of allergies, but they are not the direct cause of hypersensitivity to an allergen.
