Answer:
He was exhibiting letter C. discretion.
Explanation:
Discretion is present in all levels of law enforcement. It refers to an authority's acting according to his own judgment, adapting his decision to each situation. In the case described in the question, Officer Smith could have very well punished all the people involved equally, since they were all technically guilty of the same infraction. He may, however, have used his own judgment to assess the differences between the cases. The man and woman who were kissing were less likely to be in the park to commit a crime then the two men, who could very well be drug users or even thieves. Since there is no way to know for sure, discretion is quite subjective, which leads many to see it as unfair.