How does the enhanced cost-per-click (ECPC) bidding strategy work?

ECPC looks at a listed target return on investment (ROI), then raises a max cost-per-click (CPC) bid.
ECPC looks at ad auctions, then lowers a max cost-per-click (CPC) bid.
ECPC looks at a listed target return on investment (ROI), then lowers a max cost-per-click (CPC) bid.
ECPC looks at ad auctions, then raises a max cost-per-click (CPC) bid.

The correct answer is:

Sources: Google Ads Measurement Certification Assessment Course

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