Answer:
b. malpractice
Explanation:
Malpractice, or professional negligence, refers to a case of incompetence on the part of a professional. A case of malpractice usually occurs when a client feels that a professional breached his or her duty of care. Some of the professionals that can be accused of malpractice are medical professionals, lawyers, accountants, stockbrokers and architects.
Maybe they have suffered when they were a young child, and the past became who he is now.