The correct option is C Germ theory of disease
The germ theory of disease states that some diseases are caused by microorganisms. These small organisms, too small to see without magnification, invade humans, animals and other living hosts. Their growth and reproduction within their hosts can cause a disease. "Germ" may refer to a virus, bacterium, protist, fungus, or prion. Microorganisms that cause disease are called as pathogens and the diseases they cause are called as infectious diseases. Pasteur gave germ theory of disease. Pasteur did not give cellular theory (Robert Hooke), germ plasm theory (Weismann) and recapitulation theory (Haeckel). Thus, the correct answer is option C.