Anthrax is caused by

Options

A. Bacillus anthracis
B. Coxsackie virus
C. Aspergillus
D. virus

Explanation

**Step-by-Step Solution:**

1. **Identify the Disease**: The question asks about the cause of anthrax, which is a well-known infectious disease.

2. **Understand the Nature of Anthrax**: Anthrax is primarily a bacterial disease. It is important to recognize that it is caused by a specific type of bacteria.

3. **Recognize the Affected Hosts**: Anthrax mainly affects herbivorous animals, but it can also infect humans. In humans, it can manifest in various forms, with skin infections being the most common.

4. **Identify the Causative Agent**: The causative agent of anthrax is a bacterium known as Bacillus anthracis. This bacterium is classified as an aerobic bacillus, meaning it requires oxygen for growth.

5. **Select the Correct Answer**: Based on the information gathered, the correct answer to the question "Anthrax is caused by" is Bacillus anthracis.

**Final Answer**: Anthrax is caused by Bacillus anthracis.

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