How does Google Ads data-driven attribution give credit for conversions?

It gives more credit to clicks that happened closer to the conversion.
It uses the linear model to credit conversions equally across all clicks on the path.
It uses your unique account data and machine learning technology to distribute credit between ad clicks according to which touchpoints were most critical to the conversion.
It gives 40 percent credit to the first click and spreads the remaining 60 percent across all other clicks in the conversion path.