What is the correct path for assigning a contact list filter to an existing campaign?

The option indicating "Admin > Outbound > Campaign Management" is the correct path for assigning a contact list filter to an existing campaign. This path is specifically designed to facilitate the management of campaigns, including the ability to assign filters to contact lists associated with those campaigns. Campaign Management is the area within the administration interface where you actively manage and configure the behaviors and attributes of your outbound campaigns, such as selecting the right contact lists and applying any necessary filters to effectively target your outreach efforts.

The other options do not lead to the necessary tools for assigning filters to campaigns. While "Campaign Settings" might imply general settings related to an outbound campaign, it does not focus on the management aspect required to assign filters. "List Management" usually involves the creation and organization of contact lists rather than directly filtering those lists for specific campaigns. Lastly, "Filter Settings" under the Contacts section is likely dedicated to creating or modifying filters themselves, rather than the campaign assignment process. Thus, understanding the functional purposes of each area helps clarify why "Campaign Management" is the correct choice for this task.