Which of the following is likely to be the most effective form of punishment?

Which of the following is likely to be the most effective form of punishment?
 
  a. Marjorie promptly takes away her son Bens crayons each time he refuses to share with his younger brother, causing Ben to cry.
  b. Alice catches her daughter Debby smoking in the attic and shouts: Just wait until your father gets home this weekend
  c. Ken sometimes yells at his son Artie for coming home later than his curfew.
  d. Jane sends her son Josh to bed without supper when he uses swear words at the dinner table; although hungry, Josh uses this time to read in his room.