Bacterium which causes diphtheria belongs to

Options

A. Bacillus
B. Corynebacterium
C. Diplococcus
D. Vibrio

Answer

To solve the question regarding which bacterium causes diphtheria, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Disease**: The question asks about the bacterium that causes diphtheria. Diphtheria is a serious bacterial infection affecting the throat and nose.

2. **Review the Options**: The options given are:
- A. Bacillus
- B. Corneum Bacterium
- C. Diplococcus
- D. Vibrio

3. **Recall the Causative Agent**: It is important to recall or research which bacterium is known to cause diphtheria. Diphtheria is specifically caused by a bacterium known as Corynebacterium diphtheriae.

4. **Match the Options**: From the options provided, we need to identify which one corresponds to the causative agent of diphtheria. The correct name is "Corynebacterium," which is often mistakenly referred to as "Corneum Bacterium" in casual contexts.

5. **Select the Correct Answer**: Based on the identification, the correct answer is option B, Corynebacterium.

### Final Answer:
The bacterium which causes diphtheria belongs to **B. Corneum Bacterium** (Corynebacterium diphtheriae).

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