Which of the following statements is true?

Which of the following statements is true?
 
  a) Underlying causes (physical and psychological) should be treated to eliminate
  behaviors and therefore cure the patient, is descriptive of the helping model.
  b) The human services model does not include the medical model.
  c) The human services model focuses on a highly specific form of intervention for
  most cases.
  d) The primary objective of the helping model is to maintain and support the
  consumers in their own community, or to create new communities for individuals
  when appropriate