What term refers to prosecutorial discretion in determining which cases are actively pursued, in light of resource availability and priority of case outcomes
The right solution will be "Selective prosecution".
Explanation:
Selective prosecution occurs when someone steals a complaint is made at either the initiative of such a prosecutor instead of being in the usual operation including its investigating authority's organization as a matter of practice.
It might just be the implementation or enforcement under criminal statutes towards a certain category of citizens as well as the corresponding failure to implement existing penalties against someone outside of the specified clause