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A communicable disease is:

  1. Not transmitted from one person to another

  2. Not responsible for an epidemic

  3. Transmitted from one person to another

  4. Caused by non-pathogenic bacteria

The correct answer is: Transmitted from one person to another

A communicable disease is an infectious disease caused by a pathogenic organism and can be transmitted from one person to another. Option A is incorrect because communicable diseases are in fact transmitted from one person to another. Option B is incorrect because a communicable disease can be responsible for an epidemic if it spreads rapidly among a population. Option D is incorrect because communicable diseases are caused by pathogenic organisms, such as viruses, bacteria, fungi, or parasites. Non-pathogenic bacteria do not cause disease.