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
[{'content': 'Objective of surveying diagnostic cast is to \nSelect and explain. \nA. Blocking out, B. Determining most favourable path of insertion, C. Placement of internal rest, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: To determine the most desirable path of placement that will eliminate or minimize interference to placement and removal.', 'role': 'assistant'}]