This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health care of community & international health, Subject name: Social & Preventive Medicine
Elements of primary health care includes all of the following except 
Select and explain. 
A. Adequate supply of safe water and basic sanitation, B. Providing essential drugs, C. Sound referral system, D. Health education
C: Sound referral system
Answer: C: Sound referral system 
Explanation: Primary health care: DEFINITION: Essential health care, based on practically , scientifically sound, and socially acceptable methods and technology,made universally accessible to individuals and families in the community, through their full paicipation and at a cost that the community and country can afford Ref: Park 25th edition Pgno : 951