Microorganisms are _______.

Options

A. unicellular
B. multicellular
C. both
D. none of these

Answer

**Step-by-Step Solution:**

1. **Understanding Microorganisms**: Microorganisms are tiny living organisms that cannot be seen with the naked eye. They include various types such as bacteria, fungi, protozoa, and viruses.

2. **Classification of Microorganisms**: Microorganisms can be classified based on their cellular structure:
- **Unicellular**: These are organisms made up of a single cell. Examples include bacteria and protozoa.
- **Multicellular**: These are organisms made up of multiple cells. An example of a multicellular microorganism is fungi.

3. **Conclusion**: Therefore, microorganisms can be both unicellular and multicellular.

4. **Final Answer**: Microorganisms are **both unicellular and multicellular**.

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