A) Penicillin
B) Telephone
C) X-Ray
D) None of these
🧠 Explanation:
Penicillin, found by Alexander Fleming, is a medicine that fights germs. Imagine a superhero stopping bad bugs in your body! Fleming discovered it in 1928 when mold killed bacteria in his lab. For kids, it’s like finding a magic shield for sickness. Penicillin stops infections, like sore throats, saving lives. This discovery changed how doctors treat illnesses. Learning about penicillin shows children how scientists help us stay healthy with smart discoveries. It teaches them to appreciate science and how careful work in a lab can create medicines that keep us strong and ready for school or play.