This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Elements of primary health care include 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: Elements of Primary health care -

Education concerning prevailing health problems and the methods of preventing and controlling them
Promotion of food supply and proper nutrition
An adequate supply of safe water and basic sanitation
Maternal and child healths care including family planning.
Immunization against major infectious disease
Prevention and control of locally endemic disease.
Appropriate t/t of common disease and injuries.
Provision of essential drugs