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: Pharmacology
Essential medicines are those medicines: 
Select and explain. 
A. That are needed to treat emergency conditions, B. That are needed to treat serious diseases, C. That satisfy the priority health care needs of the population, D. That are introduced recently into the market
C: That satisfy the priority health care needs of the population
Answer: C: That satisfy the priority health care needs of the population 
Explanation: None