TB facts identification

Steps:

• TB (tuberculosis) is caused by Mycobacterium tuberculosis, an acid-fast bacterium transmitted via airborne droplets.
• Key facts typically include pathogen traits like slow growth, lung targeting, and antibiotic resistance (e.g., isoniazid use).
• Evaluate choices by matching numbered facts to TB characteristics: 3 (airborne transmission), 4 (acid-fast staining), 6 (chronic lung infection).
• Eliminate mismatches: facts 1,2,5 relate to other diseases/pathogens like viruses or fungi.

Why D is correct:

• Option D selects facts 3,4,6, which align with TB's bacterial nature, staining method, and respiratory spread per microbiology definitions.

Why the others are wrong:

• A includes 1 (viral trait, not bacterial TB).
• B includes 1 and 2 (unrelated to TB pathogen).
• C includes 2 and 5 (fungal or non-respiratory facts).

Not enough information on exact facts 1-6, but D fits standard TB knowledge.

Final answer: D