How does a Performance Max campaign work to find potential customers for an advertiser?

By utilizing AI to make decisions around how much money is budgets to various channels like YouTube and Search
By letting advertisers create and manage individual text, image, and video ads so that they can better tailor their ads to their intended audience
By optimizing campaigns across channels manually and insights into performance drivers
By promoting a particular product or service in a single campaign that covers almost all Google Ads inventory

The correct answer is:

By promoting a particular product or service in a single campaign that covers almost all Google Ads inventory.