A kind of allergy is

Options

A. Asthma
B. Yellow eyes
C. Mumps
D. Typhoid

Answer

### Step-by-Step Solution:

1. **Understanding Allergy**: An allergy is an exaggerated response of the immune system to certain substances known as allergens. These allergens can be found in the environment and can trigger various symptoms when introduced into the body.

2. **Identifying Common Allergens**: Common allergens include substances like pollen grains, animal dander, wheat, eggs, yeast, certain flowers, and even environmental factors such as cold and dust mites.

3. **Symptoms of Allergies**: When allergens are encountered, the immune system reacts, leading to symptoms such as a runny nose, skin redness, swelling of the eyes, watery eyes, and difficulty in breathing.

4. **Evaluating the Options**: The question provides several options, and we need to identify which one represents a type of allergy:
- **Option 1: Asthma** - Asthma is indeed an allergic disorder characterized by bronchoconstriction, which leads to difficulty in breathing and wheezing.
- **Option 2: Yellow Eyes** - This is related to jaundice, a liver disease, and not an allergy.
- **Option 3: Mumps** - This is a viral infection affecting the parotid gland, not an allergy.
- **Option 4: Typhoid** - This is a bacterial infection caused by Salmonella typhi, also not an allergy.

5. **Conclusion**: Among the options provided, asthma is the only condition that qualifies as a type of allergy. Therefore, the correct answer is **Option 1: Asthma**.