B: I think fear of height because children learn behavior and attitude from parents.
B: many fears are learn during our live. If people confront there fear in a gradual way , they can learn to control hoe they react to the situation.
A: I think so , Fear happen from subconscious and learn from situation live.
B: Sure , So method to restore and lost fear not cure the fear completely , but it will probably help people to cope better.
So if can make it better , should be avoid confront and find away to cope with it.