Why is it important for social workers to consider a client's outside social supports when working ...

Why is it important for social workers to consider a client's outside social supports
  when working with them?
 
  a. Because if the social worker knows a client has social supports who view the
  social worker and services as credible, as well as encourage the client, the
  social worker also knows that the chances the client will engage in change
  work are increased
  b. Because if the social worker knows a client has social supports who do not
  view the social worker and services as credible, and does not encourage the
  client, the social worker also knows that the chances the client will engage in
  change work are increased
  c. Because if the social worker knows a client has social supports who view the
  client and change work as credible, as well as encourage the social worker,
  the social worker knows that the chances the client's members of their social
  support system will engage in change work are increased
  d. Because the social worker will use the feedback from the client's outside
  social supports to gauge how well the client is doing in regards to change
  work