- An ord value
- Dynamic pixels
- 1×1 tracking pixel
- Custom Floodlight variable
The correct answer is: Custom Floodlight variable
Explanation: Custom Floodlight variables enable you to capture information beyond the basics (visits and revenue) that you can collect with standard parameters in your tags. You can include custom Floodlight variables in any of your Floodlight activity tags and report on their values in Report Builder. You can create up to 100 custom variables per Floodlight configuration. You can also add friendly names to make these parameters easier to understand in reports.
Read more here: https://support.google.com/campaignmanager/answer/2823222