Uj araki san advertiser at a magazine company.He wants to reach shoppers who visited the subscription sign-uppage,but did not complete their sign ups.Which type of audience could he use to best reach this audience?

The correct answer is "Audiences transferred based on pixel traffic from their website" because this method allows advertisers to track user behavior on their website, including visits to specific pages like a subscription sign-up page. By placing a pixel on the website, Uj araki san can create a retargeting audience of users who visited the sign-up page but did not complete the process, enabling him to specifically target these individuals with relevant ads to encourage completion. "Advertiser hashed audiences" are typically used for matching existing customer data (like email addresses) with advertising platforms, not for tracking website behavior of anonymous visitors. "Audiences based on keyword searches" target users based on their search queries, which is a broader approach and doesn't specifically identify users who abandoned a sign-up process on a particular website.