Why is it important to use formal practice evaluation when the work slows or stops?

Why is it important to use formal practice evaluation when the work slows or stops?
 
  a. If you do not use it then your client will assume you do not care and are not
  interested in them
  b. The work may not proceed effectively if there are deficits in common factors
  c. Because if you interact with clients more formally including dressing up and
  addressing them as Sir or Madame helps clients to see you as an effective
  professional practitioner
  d. If you do not use it your supervisor will not see you as a competent and
  professional social worker