IMMUNOLOGY

Detailed explanation-1: -Microbes that cause disease are called pathogens. It is important to remember that: A pathogen is a micro-organism that has the potential to cause disease. An infection is the invasion and multiplication of pathogenic microbes in an individual or population.

Detailed explanation-2: -Microorganisms that cause disease are collectively called pathogens. Pathogens cause disease either by disrupting the bodies normal processes and/or stimulating the immune system to produce a defensive response, resulting in high fever, inflammation? and other symptoms.

Detailed explanation-3: -The definition of pathogens goes like “ disease causing microbes are called pathogens". Pathogen is a broad term used for all those microorganisms which in a way or other cause disease. So, option B is the correct answer.

Detailed explanation-4: -Microbes that cause diseases are collectively called pathogens.