The correct answer is Tuberculosis.Tuberculosis is caused by a bacterium called Mycobacterium tuberculosis, belonging to the Mycobacteriaceae family consisting of about 200 members.Tuberculosis is a communicable disease, it spreads from one person to another through contact. Infectious diseases are caused by pathogenic microorganisms, such as bacteria, viruses, worm or Protozoa, etcThey can be spread directly or indirectly, from one person to another through body secretions, insects, or other means of transportation.Zoonotic diseases are also infectious when transmitted from animals to humans.Additional InformationSome examples of infectious diseases and their agents are given below.DiseasesCaused byInfluenzaVirusSmallpoxVirusGerman measlesVirusTuberculosisBacteria Whooping coughBacteriaCholeraBacteriaTyphoid feverBacteriaAthlete's footFungi