Nokea
What is a severe allergic reaction that can cause difficulty breathing and shock?
Correct Answer: A
Rationale: The correct answer is A: Anaphylaxis. Anaphylaxis is a severe allergic reaction that can cause difficulty breathing and shock due to the body's extreme immune response to an allergen. It involves a systemic release of histamine and other chemicals leading to symptoms like swelling, hives, and a drop in blood pressure. Asthma attack (B) is a respiratory condition characterized by airway inflammation and narrowing, but it is not necessarily related to an allergic reaction. Bronchospasm (C) refers to the sudden constriction of the muscles lining the airways, which can occur in asthma or other respiratory conditions, but it is not specific to an allergic reaction. Hypersensitivity (D) is a general term for exaggerated immune responses, including allergies, but it does not specifically describe the severe and potentially life-threatening nature of anaphylaxis.