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: Dental
In health education program, a group of 10 people are planning to speak on a single topic of common interest. Which one of the following is best educational approach? 
Select and explain. 
A. Panel discussion, B. Symposium, C. Group discussion, D. Workshop
C: Group discussion
Answer: C: Group discussion 
Explanation: None