Stethoscope was invented by A) Jenner B) Sabin C) Lanni D) Pasteure
Option C) 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.
