Which statement is true? (1 point)

Question

There was a consensus among scientists that germs caused diseases before the 19th century.
There was a consensus among scientists that miasma caused diseases by the 19th century.
There was a consensus among scientists that germs caused diseases by the 19th century.

Answer 1

The statement that is true is: There was a consensus among scientists that miasma caused diseases by the 19th century.

Before the germ theory was widely accepted, the miasma theory—that diseases were caused by "bad air" or foul-smelling vapors—was the prevailing belief among scientists and the medical community. The germ theory, which proposed that microorganisms cause diseases, gained consensus later in the 19th century, particularly after the work of scientists such as Louis Pasteur and Robert Koch.