Which word completes the statement: The growth and spread of small, harmful organisms within the body is known as an ________ disease.

Which word completes the statement: The growth and spread of small, harmful organisms within the body is known as an ________ disease.

• A. Infectious
• B. Contagious
• C. Chronic
• D. Acute

Answer: (A)

The growth and spread of small, harmful organisms within the body describes an infectious disease. Infectious diseases are caused by pathogens such as bacteria, viruses, fungi, or parasites that invade the body, multiply, and cause illness. The key idea is the presence and multiplication of organisms inside the body, not how easily the disease spreads between people. Contagious refers to how readily a disease is transmitted from one person to another, which is about transmission rather than the internal growth of the pathogens. Chronic and acute describe the duration and pattern of illness (long-lasting versus sudden/short-term) rather than the cause.

The growth and spread of small, harmful organisms within the body describes an infectious disease. Infectious diseases are caused by pathogens such as bacteria, viruses, fungi, or parasites that invade the body, multiply, and cause illness. The key idea is the presence and multiplication of organisms inside the body, not how easily the disease spreads between people. Contagious refers to how readily a disease is transmitted from one person to another, which is about transmission rather than the internal growth of the pathogens. Chronic and acute describe the duration and pattern of illness (long-lasting versus sudden/short-term) rather than the cause.