Answer:
D. Cost-effectiveness
Step-by-step explanation:
The cost effectiveness refers to an output where it is produced in a good way without incurring a lot of money
Here in the given situation, it is mentioned that the organization i.e. violence prevention reported the violence prevention that they saved over one million dollars in term of year by preventing the 300 shooting per yer
So this situation represents the cost effectiveness
hence, the correct option is d.