Which of the following is a bactericidal antibiotic ?

Options

A. Ofloxacin
B. Tetracycline
C. Chloramphenicol
D. Erythromycin

Answer

To determine which of the following is a bactericidal antibiotic, we need to understand the definition of bactericidal antibiotics and identify examples of such antibiotics.

### Step-by-Step Solution:

1. **Understand the Definition**:
- A bactericidal antibiotic is one that kills bacteria rather than merely inhibiting their growth. This means that when a bactericidal antibiotic is administered, it leads to the death of bacterial cells.

2. **Identify Examples**:
- Common examples of bactericidal antibiotics include:
- **Penicillin**: This antibiotic works by interfering with the synthesis of the bacterial cell wall, leading to cell lysis and death.
- **Afloxacin**: This is a fluoroquinolone antibiotic that also kills bacteria by inhibiting DNA gyrase and topoisomerase IV, essential for bacterial DNA replication.

3. **Evaluate the Options**:
- If the question provides multiple options, we would need to evaluate each one to see if it fits the criteria of being bactericidal.
- For instance, if the options included Afloxacin, Penicillin, and others, we would confirm that Afloxacin is indeed a bactericidal antibiotic.

4. **Select the Correct Answer**:
- Based on the understanding and examples provided, we conclude that **Afloxacin** is a bactericidal antibiotic.

### Final Answer:
- The bactericidal antibiotic from the options given is **Afloxacin**.