Which of the Following Is the Definition of a Naturalistic

Which of the following is the definition of a naturalistic disease theory?

A) Illness is due to the purposeful intervention of a supernatural being, a non-human being, or a person who has supernatural powers.
B) A person's health is closely connected to the environment with natural conditions or biological materials impacting a person's health.
C) A person's health is determined by what that person decides it to be based on their assumed symptoms.
D) Illness is due to an individual's experiences interacting with healthcare professionals and their professional opinions.