What are the prerequisites to be able to create Global Conversion Activity?

To create a Global Conversion Activity, you must first define a Global Advertiser under the Native Account. This is a foundational step that establishes the necessary organizational structure within the ad server to support global-level tracking. Without a Global Advertiser, the system lacks the designated entity to which a Global Conversion Activity can be associated. The other options are incorrect because they either describe subsequent steps or irrelevant configurations. Creating Global Variables and activity parameters happens after the Global Advertiser is established, as these parameters are then assigned to the activity. Creating a Search Integration on the advertiser level is unrelated to the prerequisites for creating a Global Conversion Activity; it pertains to search tracking, not the global conversion setup itself.