An organism which has been used as a weapon in biological war causes which of the following disease?

Options

A. malaria , influenza
B. common cold , plague
C. influenza , anthrax
D. anthrax , plague

Answer

To answer the question regarding which disease is caused by an organism that has been used as a weapon in biological warfare, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Biological Warfare Agents**: Understand that biological warfare involves using pathogens to harm or kill humans, animals, or plants. Common agents include bacteria, viruses, and toxins.

2. **Recognize Historical Context**: Throughout history, certain diseases have been intentionally spread as weapons. Notably, the plague and anthrax have been used in warfare.

3. **Classify the Organisms**:
- **Plague** is caused by the bacterium *Yersinia pestis*.
- **Anthrax** is caused by the bacterium *Bacillus anthracis*.
- Other diseases mentioned, such as malaria, are caused by protozoans (like *Plasmodium*), and the common cold is caused by viruses (like rhinoviruses).

4. **Determine the Correct Answer**: Since the question asks for diseases caused by organisms used as weapons, we focus on the bacterial diseases. Both plague and anthrax fit this criterion.

5. **Conclude the Answer**: The diseases caused by organisms used in biological warfare are **Plague and Anthrax**.

### Final Answer:
The organism which has been used as a weapon in biological warfare causes **Plague and Anthrax**.

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