What technology allows users to interact with 3D images or environments in a seemingly real way?

The correct choice is Virtual Reality, which immerses users in a completely simulated environment that can be similar to or entirely different from the real world. This immersion is typically achieved through the use of headsets and sensory equipment that engage the user’s sight and hearing, often incorporating body movements via tracking systems to provide a fully immersive experience. Users in a virtual reality setting feel as if they are truly present within the 3D environment, allowing for interactions that can range from exploring virtual landscapes to engaging in simulated activities.

The other technologies listed involve different aspects of user interaction with digital content. Augmented Reality overlays digital information onto the real world, enhancing the user's perception of their environment rather than creating a fully immersive experience. Mixed Reality combines elements of both augmented and virtual reality, allowing for interaction between real and virtual objects in real-time. Cognitive Computing refers to systems that simulate human thought processes in complex situations but does not specifically pertain to the interaction with 3D environments. Each of these alternatives has its own unique applications, making Virtual Reality the most fitting choice for the context of interacting with 3D images or environments in a realistic way.