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Alexander Fleming discovered
1. Penicillin
2. X-Ray
3. Streptomycin
4. Telephone

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Correct Answer - Option 1 : Penicillin

The correct answer is Penicillin.

Discoverers and their discoveries

Discovery Discoverer
Penicillin Alexander Fleming
X-Ray Wilhelm Roentgen
Streptomycin Albert Schatz
Telephone Alexander Graham Bell

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