Which of the following is not a waterborne disease

Options

A. Asthma
B. Cholera
C. Amoebiasis
D. None of these

Explanation

To determine which of the following is not a waterborne disease, we can follow these steps:

### Step 1: Understand Waterborne Diseases
Waterborne diseases are illnesses caused by pathogens that are transmitted through contaminated water. Common examples include cholera and amoebiasis, which are caused by bacteria and protozoa, respectively.

### Step 2: Analyze the Options
We need to look at the options provided and identify which one does not fit the definition of a waterborne disease.

### Step 3: Identify the Causative Agents
- **Asthma**: This is a respiratory condition characterized by difficulty in breathing due to inflammation and narrowing of the airways. It is triggered by allergens such as pollen, dust, and smoke, not by water.
- **Cholera**: This is a bacterial infection caused by *Vibrio cholerae*, which is transmitted through contaminated water and food.
- **Amoebiasis**: This is caused by the protozoan *Entamoeba histolytica*, which can also be transmitted through contaminated water and food.

### Step 4: Conclusion
Since asthma is not transmitted through water, it is not a waterborne disease. Therefore, the correct answer is asthma.

### Final Answer
The disease that is not a waterborne disease is **asthma**.

---