Bacteria that causes tuberculosis and anthrax were discovered by

Options

A. 1.Alexander Fleming
B. 2.Edward Jenner
C. 3.Ronald Ross
D. 4.Robert Koch

Explanation

To solve the question about who discovered the bacteria that cause tuberculosis and anthrax, we can follow these steps:

**Step 1: Identify the bacteria in question.**
- The question mentions two specific diseases: tuberculosis and anthrax.

**Step 2: Recall the historical figures associated with these discoveries.**
- We need to think about the scientists known for their work on these diseases.

**Step 3: Evaluate the options provided.**
- The options given are:
1. Alexander Fleming
2. Edward Jenner
3. Ronald Ross
4. Robert Koch

**Step 4: Analyze each option based on historical contributions.**
- Alexander Fleming is known for discovering penicillin, not for tuberculosis or anthrax.
- Edward Jenner is famous for developing the smallpox vaccine, unrelated to the bacteria in question.
- Ronald Ross is recognized for his work on the transmission of malaria, which does not pertain to tuberculosis or anthrax.
- Robert Koch is known for his pioneering work in microbiology and is credited with discovering the bacteria that cause tuberculosis (Mycobacterium tuberculosis) and anthrax (Bacillus anthracis).

**Step 5: Conclude with the correct answer.**
- Based on the analysis, the correct answer is Robert Koch, as he discovered the bacteria responsible for both tuberculosis and anthrax.

**Final Answer: Robert Koch**

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