Germ theory, in medicine, the theory that certain diseases are caused by the invasion of the body by microorganisms, organisms too small to be seen except through a microscope.
Answer: A
Explanation: because if you learn to fall correctly then you could prevent it.
Xavier is being emotionally abused but the comments his grandmothers is telling him. These comments make him believe the things the grandmother is saying. So D
A few difficulties would be caring for a newborn and providing for one another