- Cost-per-click
- Page depth
- Time spent on site
- Cart size
The correct answer is: Cart size
Explanation: To measure value in digital advertising, the “Cart size” metric is a critical component. Using value-based bidding, auctions that provide the most significant conversion value are prioritized, with cart size being a defining measure of the monetary or business value a customer offers. Effectively, bidding based on cart size can initiate consumer segmentation, allowing for the possibility of diverse product sales from a single ad click. The feature “Conversions with Cart Data” provides insight into the items purchased after ad clicks, top-selling items, and those most likely to convert.
Read more here: https://support.google.com/sa360/answer/9455757