Suppose a user views three ads on three different platforms before taking action on your website. How many platforms can claim the conversion?

The correct answer is 3 because when using multi-touch attribution, each platform that a user interacts with before converting can receive credit for the conversion. In this example, the user saw ads on three different platforms, so all three platforms can claim a portion of the conversion depending on the attribution model used (e.g., linear attribution gives equal credit to all). Single-touch models, like first-touch or last-touch, would only credit one platform, but multi-touch allows all relevant platforms to share credit.