What occurs when germs multiply in the body?

When germs multiply in the body, they can lead to the development of diseases. This process often begins when pathogens, such as bacteria or viruses, invade the host and start to reproduce. As their numbers increase, they can overwhelm the body's natural defenses, leading to symptoms of illness and impairment of normal function.

Infectious diseases result from this proliferation, as the pathogens may produce toxins, directly damage tissues, or trigger inflammatory responses. The body's immune system may respond to the infection, but if the number of germs becomes too high or they are particularly virulent, the immune response may not be sufficient to prevent the onset of disease.

In contrast, germs becoming dormant would indicate they are not actively multiplying, while successful elimination by the immune system would prevent the establishment of disease. The notion that germs cease to be harmful does not align with the typical mechanisms of infectious disease, as multiplying germs generally become more of a threat. Thus, the correct answer highlights the direct correlation between germ multiplication and the manifestation of diseases.