Final answer:
To save the filtered view, use 'Save As' and give the view a new name.
Step-by-step explanation:
In order to save the filtered view for the active case system with the Customer service representative security role, you should select option **D. Use Save As and give the view a new name**. By selecting this option, you can create a copy of the view and give it a unique name, allowing you to save the filtered view separately from the original view.