Which automation tool would you use to create a new list to be used once based on the prospect's location and title?

The best choice for creating a new list to be used once based on the prospect's location and title is the segmentation rule. This tool allows marketers to define specific criteria for their lists, such as geographic location and job title. By using a segmentation rule, you can effectively create a targeted list tailored to specific segments of your audience for a one-time campaign or purpose.

Segmentation rules enable the creation of static lists, which means once the data is compiled based on the defined criteria, it will not automatically update with new prospects. This is particularly useful when the intention is to use the list for a single, focused campaign or event.

The other options, while they serve important purposes in automation and segmentation, do not align with the requirement for a one-time use list. Automation rules are typically used for ongoing processes, dynamic lists automatically update based on changing criteria, and completion actions are usually tied to a specific action taken within a campaign rather than list creation.