Which statement best describes the germ theory of disease? diseases are caused by bad-smelling poisonous vapors that contain decaying matter. diseases are created or generated spontaneously within the body. diseases can be isolated and grown in cultures. diseases are caused by the presence and action of specific microorganisms.

 Fourth option is correct.

Explanation:

Germ theory of disease stated that Diseases are caused by the presence and action of specific microorganisms inside the body.

It says that the pathogens are responsible for causing diseases.

These pathogens are too small to see without the use of microscope attacks human, animals and other hosts.

That pathogens caused infection due to which diseases occur in the body.

Hence, Fourth option is correct.

D.

Explanation:

Diseases are caused by the presence and action of specific microorganisms.

a) carbon, hydrogen

b) carbon, hydrogen, oxygen, nitrogen

c) carbon, hydrogen, oxygen, nitrogen, phosphorus

d) sugar

e) amino acid

f) nucleotide