Question

can you outsmart the fallacy that fooled a generation of doctors?
what caused the reduction in ignaz semmelweis’ maternity deaths from childbed fever?
a autopsy procedures
b contagious bacteria
c hand washing
d hemolytic streptococcus

Explanation:

The question is about the cause of reduced deaths from childbed fever (puerperal fever). Ignaz Semmelweis showed that handwashing (option C) reduced such deaths by reducing bacterial transmission. Autopsy procedures (A) weren't the cause of reduction, contagious bacteria (B) were the problem, and hemolytic streptococcus (D) is a type of bacteria but the key intervention was handwashing.

Answer:

C. hand washing