Question

multiple choice question
an infectious disease is one that
○ was known previously but has become more prevalent
○ results from an imbalance in body systems
○ is caused by a microorganism
○ results from genetic defects
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Explanation:

Infectious diseases are caused by microorganisms like bacteria, viruses, fungi, or parasites. They are transmissible from one person to another or from an animal to a person. The other options describe different types of non - infectious conditions. For example, a disease that was known previously but has become more prevalent is not the definition of an infectious disease. An imbalance in body systems may lead to non - infectious diseases like some metabolic disorders. Genetic defects cause genetic diseases, not infectious ones.

Answer:

C. is caused by a microorganism