Select viable pollutant

Options

A. Smoke
B. Moulds
C. Mist
D. Fumes

Answer

To determine which of the given options is a viable pollutant, we need to understand the definition of viable pollutants and analyze each option accordingly.

### Step-by-Step Solution:

1. **Define Viable Pollutants**:
- Viable pollutants are defined as substances that are either organic or minute living organisms. They can cause harmful effects when spread in the atmosphere.

2. **Identify Examples of Viable Pollutants**:
- Common examples include bacteria, fungi, and viruses, which are all organic substances or living organisms.

3. **Analyze Each Option**:
- **Option 1: Smoke**
- Smoke is primarily composed of inorganic substances and is made up of non-living particles. Therefore, it is classified as a non-viable pollutant.
- **Option 2: Molds**
- Molds are a type of fungus and are considered living organisms. Therefore, they qualify as viable pollutants.
- **Option 3: Mist**
- Mist consists of tiny water droplets suspended in the air and is considered a non-living aerosol. Thus, it is a non-viable pollutant.
- **Option 4: Fumes**
- Fumes consist of fine particles or gases that are typically produced from combustion or chemical reactions. They are also non-living and classified as non-viable pollutants.

4. **Conclusion**:
- After analyzing all the options, the only viable pollutant among the choices is **Option 2: Molds**.

### Final Answer:
The viable pollutant is **Molds**.

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