Penicillin was first commercially Prepared in

Options

A. U.K.
B. France
C. U.S.A.
D. Canada

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the country where penicillin was first commercially prepared.

2. **Historical Context**: Penicillin is known as the first antibiotic discovered, and its discovery is attributed to Alexander Fleming, who observed its effects on bacteria.

3. **Discovery of Penicillin**: In 1928, Alexander Fleming accidentally discovered penicillin while working with bacterial cultures. He noticed that a mold (later identified as Penicillium notatum) inhibited the growth of bacteria.

4. **Commercial Preparation**: Although penicillin was discovered in the UK, it was the United States that played a significant role in the commercial production of penicillin during World War II. The mass production techniques developed in the US made it widely available.

5. **Conclusion**: Therefore, the country associated with the first commercial preparation of penicillin is the United States.

**Final Answer**: Penicillin was first commercially prepared in the United States.

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