Final answer:
To create a custom audience list for targeting specific product or service purchasers, use a Custom Floodlight variable that captures the unique IDs associated with the purchases. Option 2 is correct.
Step-by-step explanation:
The feature in Floodlight that can be used to create a custom audience list targeting customers who purchased a specific product or service is a Custom Floodlight variable that captures the product or service ID.
When a customer completes a purchase, a Floodlight tag configured with custom variables will record the product or service ID. This information can then be used to create audiences based on specific purchases, enabling targeted advertising and remarketing strategies.
The Floodlight feature that can be used to create a custom audience list targeting customers who purchased a specific product or service is option 2) Custom Floodlight variable that captures the product or service ID.
This feature allows you to track and capture the product or service ID when a customer makes a purchase. By using this custom Floodlight variable, you can create a custom audience list based on the specific product or service ID.