Which of the following describes virtual simulations?

Virtual simulations are designed to replicate physical assets and situations using computer-generated environments. By simulating real-world interfaces, they allow users to interact with these virtual environments as if they are engaging with actual physical systems. This can include everything from training operators on machinery to modeling complex scenarios where real-world implementation would be impractical or too costly.

In contrast, the other options do not accurately capture the essence of virtual simulations. The assertion that they require no human interaction overlooks the interactive nature of these simulations, where user engagement is often a crucial component. Additionally, describing them as physical assets used in real-world scenarios is misleading, as virtual simulations are fundamentally digital representations rather than tangible objects. Lastly, stating that they involve only automated systems fails to recognize that many virtual simulations are designed for human operation and interaction, incorporating decision-making and operational input from users.