A skeletal because they grow new skin for example if you skin your knee the skin will eventually grow back the fastest
I believe the answer is D. Unintentional/preventable
Post traumatic would be a disorder that includes flashbacks.
Generalized anxiety disorder would be experiencing frequent and intense fear.
Obsessive-compulsive is an extreme fear of a specific object or situation such as, you see one book with the pages facing outward and the rest have their spine showing.