People in the "pro" side would say what's good about whatever the topic is.
The most widely used by therapist in recovering childhood memories is hypnosis. Hypnosis is a way of having a person be placed in a state of concentration, in order for the person to respond to suggestions. It enables a person remember the past and the things that had happened on his or her past. That makes it usable in recovering childhood memories.
Answer:
surviving of what they need
Well, it depends. Technically all of those answers could SHAPE culture, but language, religion, and government are the best answers. People can still practice their culture despite where they are in the world, after all. So A, B, and C.