What percentage of all state prison inmates in the United States will eventually be released?

What percentage of all state prison inmates in the United States will eventually be released?
 
  a. Less than 67
  b. 77
  c. 87
  d. More than 97

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(Question #2) Which four states have achieved significant declines in their prison populations by sentencing more drug offenders to probation and reducing their sentences to make them eligible for early parole?
 
  a. Kansas, Michigan, New Jersey and Louisiana
  b. Kansas, Colorado, New Jersey and New York
  c. Kansas, Michigan, New Jersey and Washington
  d. Kansas, Michigan, New Jersey and New York

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(Question #3) According to the text, penological history in the United States reveals that probation and parole exists for what reason?
 
  a. To help facilitate safe communities
  b. To reduce prison overcrowding
  c. For economic reasons
  d. Both (a) and (b)

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(Question #4) According to the text, which of the following is perhaps the most difficult agency to evaluate in terms of success or failure that most probation and parole agencies in the United States fall into?
 
  a. Control model
  b. Justice model
  c. Combined model
  d. Social services model