Smallpox vaccine was discovered by ______________ .

Options

A. Louis Pasteur
B. Robert Koch
C. Edward Jenner
D. Fleming

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of the person who discovered the smallpox vaccine.

2. **Identifying the Options**: The options provided are:
- A) Louis Pasteur
- B) Robert Koch
- C) Edward Jenner
- D) Fleming

3. **Recalling Historical Information**: To answer the question, we need to recall who is known for the discovery of the smallpox vaccine.

4. **Connecting the Historical Figure**: Edward Jenner is widely recognized for his work in developing the smallpox vaccine in 1796. This is a significant historical fact in the field of immunology and vaccination.

5. **Selecting the Correct Answer**: Based on the historical information, the correct answer is C) Edward Jenner.

6. **Finalizing the Answer**: Therefore, the smallpox vaccine was discovered by Edward Jenner.

**Final Answer**: The smallpox vaccine was discovered by **Edward Jenner**.

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