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
Basic fear of a 2-year-old child during his first visit to
the dentist is related to 
Select and explain. 
A. Fear of an injection, B. Fear of separation from parent, C. Fear of dental instruments, D. Not understanding the reason for dental treatment
B: Fear of separation from parent
Answer: B: Fear of separation from parent 
Explanation: None