The architecture that addresses customer needs for voice, video, and data is C. Collaboration. Collaboration is one of the four main architectures that Cisco offers to its customers and partners, along with Security, Data Center, and Enterprise Networking. Collaboration is the architecture that enables people to communicate and work together effectively across different locations, devices, and applications. It includes solutions for voice over IP (VoIP), video conferencing, unified communications, contact center, webex meetings, and more. Collaboration helps customers and partners improve productivity, efficiency, innovation, and customer satisfaction.