It helps determine how we handle stress, relate to others, and make choices. Mental health is important at every stage of life, from childhood and adolescence through adulthood. Over the course of your life, if you experience mental health problems, your thinking, mood, and behavior could be affected.
The answer to your question is conduction.
C.) the process of bone remodeling ceases
the reason is because you don't reach full bone density till you are mid twenties and bone remodeling decreases from that time depending on how you preserve your bones.