Alexander Fleming was a _______.
A.Scottish scientist
B.English scientist
C.German scientist
D.French scientist

Hint:In 1928, Alexander Fleming discovered the world’s first broadly effective antibiotic drug called Penicillin which is utilized to treat a wide range of infections caused by bacteria.

Complete answer:
Sir Alexander Fleming was one of the best-known Scottish scientists and medical microbiologists who played a major role in the history of bacteriology through his achievements. He is best known for his discovery of an antibacterial enzyme called lysozyme and discovering the first form of antibiotics called Penicillin. It led to a breakthrough in medical science which started the antibiotic revolution from 1928.

During World War 1, Fleming served in the Army Medical Corps. The widespread use of antibiotics in World War II which significantly proved beneficial during wartime He has written numerous papers on chemotherapy, immunology, and bacteriology which has been published in various scientific and medical journals.For his achievement in discovering the antibiotics, Fleming was recognized and received the Nobel prize for Physiology and Medicine in 1945.

Fleming’s discovery led to the production and development of many antibiotics. Many illnesses which are caused by bacteria such as lung, throat, and bladder infections can be treated with the help of antibiotics in order to kill or inhibit the growth of bacteria.
Despite the advantages, the use of antibiotics also involves common side effects and certain risks, such as resistance.

Hence, the correct answer is option (A).

Note:Vaccination plays a major role in protecting the body from serious illness due to specific diseases. Certain vaccines are used to prevent as well as protect the body by producing immunity against harmful life-threatening diseases such as mumps, measles, whooping cough, etc.