Which display systems allow two or more individuals or groups to communicate with each other at a distance?

Video conferencing is specifically designed to enable real-time communication between two or more individuals or groups located at different distances. This system allows participants to see and hear each other through video and audio feeds, effectively simulating a face-to-face conversation. It utilizes various technologies, such as webcams, microphones, and internet connectivity, making it an essential tool for remote meetings, webinars, and collaborative work sessions.

In contrast, visual presenters and multimedia projectors are primarily used for sharing presentations or visual content rather than facilitating two-way communication. They may display images or videos to an audience, but they do not support interactive dialogue between participants. Video presentations, while they can convey information effectively, are typically pre-recorded and do not allow for live interaction or feedback between individuals or groups. Hence, video conferencing stands out as the correct choice for enabling real-time communication at a distance.