The document outlines the levels of health care: primary, secondary, and tertiary, with primary health care (PHC) as the foundational level focused on accessible and essential health services tailored to community needs. It emphasizes the principles of PHC established by the Alma-Ata Declaration in 1978, advocating for social equity, community participation, and inter-sectoral collaboration to address local health problems. Core activities include health education, nutrition, sanitation, maternal and child care, and preventive measures, all aimed at building sustainable health systems for disadvantaged populations.