Stethoscope was invented by

René Laennec

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Wilhelm Roentgen

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Edward Jenner

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Joseph Lister

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Solution

The correct option is A René Laennec
Stethoscope was invented by Rene Laennec. It is a medical device which is mainly used to hear the sound of heart, intestine, blood flow of the arteries and veins.
Wilhelm Roentgen discovered x rays.
Edward Jenner developed the first vaccine for smallpox.
Lister successfully introduced carbolic acid to sterilize surgical instruments and wounds.
So, the correct answer is option A.

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