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
Fractured metal parts in an RPD are best joined by 
Select and explain. 
A. Spot welding, B. Brazing, C. Laser welding, D. Electric soldering
D: Electric soldering
Answer: D: Electric soldering 
Explanation: None