Correct option is D
Explanation: Designated Microscopy Centres (DMCs) are the most widely available peripheral laboratories under RNTCP/NTEP. They provide sputum smear microscopy services for early diagnosis of tuberculosis.
Information Booster: • DMCs are the backbone of TB diagnostic services at the peripheral level. • They ensure easy access to TB diagnosis in the community.
Additional Knowledge: • NRLs and IRLs provide reference and quality assurance services. • DRLs support culture and drug-susceptibility testing. • Early diagnosis is essential for TB control and prevention.