Select the correct answer. What entity tracks the sales between brands and publishers?

Networks or Platforms are the correct answer because they provide the technological infrastructure and services that facilitate and track affiliate partnerships. They act as intermediaries, connecting brands (advertisers) with publishers (affiliates) and offering tools for tracking sales, commissions, and performance metrics. Advertisers and Partners are the parties involved in the transaction, not the tracking entities. UTM Parameters are used for tracking website traffic sources and campaign performance, but they don't track the sales between brands and publishers in an affiliate context. Agencies may manage affiliate programs, but they typically use networks or platforms for the actual tracking.