Which of these options is a primary resource for addressing billing inquiries?

The selection of the att.com First Bill Support Article as the primary resource for addressing billing inquiries is well-founded because it is specifically designed to handle questions and issues related to billing. This article likely contains comprehensive and detailed information about common billing topics, including explanations of charges, billing cycles, payment methods, and FAQs. As it is targeted directly at billing concerns, customers can find accurate and reliable information without needing to interact with representatives or wait for assistance.

In comparison, while Customer Service Chat and in-store representative meetings can provide assistance, they may not always possess the same depth of immediate and relevant billing information as a dedicated resource like the support article. Technical Support Center typically focuses on service and device-related issues rather than billing inquiries, making it less suitable for this specific need.