When one goes to a new place and suddenly starts sneezing and wheezing for no explained reason and then these sympotms disappear when one returns. This condition is called

Options

A. Autoimmunity
B. Allergy
C. Passive Immunization
D. Vaccination

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Symptoms**: The individual experiences sneezing and wheezing when they go to a new place, which indicates a respiratory response. These symptoms are not present when they return home.

2. **Identifying Possible Causes**: The symptoms of sneezing and wheezing can be caused by various factors, including autoimmunity, allergies, passive immunization, or vaccination.

3. **Analyzing Autoimmunity**: Autoimmunity occurs when the immune system mistakenly attacks the body’s own cells. This does not fit the scenario, as the symptoms are triggered by an external factor when in a new environment.

4. **Considering Allergy**: Allergies occur when the immune system reacts to foreign substances (allergens) such as dust, pollen, or pet dander. The symptoms of sneezing and wheezing are common allergic reactions, and they can be triggered by exposure to these allergens in a new environment.

5. **Evaluating Passive Immunization**: Passive immunization involves receiving antibodies from another person, which does not explain the sudden onset of respiratory symptoms in a new place.

6. **Examining Vaccination**: Vaccination is the process of administering a vaccine to stimulate the immune system. This does not relate to the immediate symptoms experienced in a new environment.

7. **Conclusion**: Given that the symptoms are triggered by exposure to allergens in the new place and disappear upon returning home, the correct condition is identified as an allergy.

**Final Answer**: The condition is called **allergy**.

---