Hay fever in due to

Options

A. Insect transmitted pollen
B. Water borne pollen and pathogens
C. Wind borne pollen
D. Virus infected pollen.

Answer

**Step-by-Step Solution:**

1. **Understanding Hay Fever**: Hay fever, also known as allergic rhinitis, is a common seasonal allergy that occurs when the immune system overreacts to allergens in the environment, particularly pollen.

2. **Identifying the Causes**: The primary cause of hay fever is the inhalation of pollen, which is released by various plants, especially grasses and trees.

3. **Types of Pollen**: The question provides multiple options regarding the type of pollen that could cause hay fever:
- Insect transmitted pollen
- Water borne pollen
- Wind borne pollen
- Virus infected pollen

4. **Analyzing Each Option**:
- **Insect Transmitted Pollen**: This type of pollen is not a common cause of hay fever, as insects typically carry pollen for fertilization purposes rather than for causing allergies.
- **Water Borne Pollen**: Pollen does not typically spread through water; therefore, this option is also incorrect.
- **Wind Borne Pollen**: This is the correct option. Wind carries pollen from trees and grasses, which can be inhaled by humans, leading to hay fever.
- **Virus Infected Pollen**: This option is incorrect as viruses do not infect pollen grains in a way that would cause hay fever.

5. **Conclusion**: Based on the analysis, the correct answer is that hay fever is primarily caused by wind borne pollen.

**Final Answer**: Wind borne pollen.

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