Which of the following is NOT a type of germ that can cause infections?

Germicide is the correct answer because it refers to a substance that kills germs, including bacteria, viruses, and fungi, rather than being a type of germ itself. It is used in disinfectants and sanitation practices to prevent infections. In contrast, bacteria, fungus, and viruses are all types of microorganisms that can cause infections in humans and other living organisms. Understanding this distinction is crucial in fields related to health and sanitation, as clients may require education about preventing infections and the role of different pathogens in illness.