Which signals are used to anchor relevancy for search campaigns expanded to the Microsoft Audience Network? Select all that apply.

When search campaigns expand to the Microsoft Audience Network, relevancy is anchored by several signals to ensure ads reach the most receptive audience. Demographics, such as age, gender, and location, help target users who fit the typical customer profile. Keywords from the original search campaign are crucial for matching ads to users' interests and search intent, even in a display environment. Purchases, or past buying behavior, indicate a user's propensity to convert and can be used to retarget or find similar audiences. User's credit card information is not used for targeting purposes due to privacy regulations and security concerns.