Which of the Following Is the Best Example of Discretion

Which of the following is the best example of discretion under the rule of law?

A) A police officer arrests a woman for wearing a short skirt because it is related to laws against public nudity.
B) A provincial health committee recommends sweeping reforms in hospital emergency rooms to cut wait times.
C) A judge withholds her reasons for convicting an important government official of assault.
D) A government official is secretive about claims that his party in involved in a corruption scandal.