Answer:
To prove a certain narrative that will help them win the case
Explanation:
If they have them testify they most likely can use what they say to help their case
Vice Versa
If they don't they probably have something that well help the opposing team
Answer:
They provide a common collection of data, where crimes are occurring, what times crimes are occurring, what each officer is doing, where patrols can be directed to better deter crime, statistics, detect similar crimes, subjects, etc.… many useful information.
Explanation:
Hope this helps
Either a or b.. but I think mainly b