What kind of response would you expect from a trigger collider interacting with a normal collider?

When a trigger collider interacts with a normal collider, the expected outcome is that only a non-physical detection response will register. Trigger colliders are designed specifically to detect overlaps with other colliders without generating a physical response, which means that they do not create forces or reactions that would normally occur with physical colliders.

In Unity, a trigger collider allows developers to check when objects enter, stay within, or exit the trigger area, utilizing methods like OnTriggerEnter, OnTriggerStay, and OnTriggerExit. This functionality is often used for game mechanics, such as triggering events or modifying gameplay conditions, while avoiding the physical interactions such as bouncing or colliding that are typical in traditional physics-based collisions.

This fundamental understanding of how trigger colliders work clarifies why the other options don't hold. For instance, while physical reactions typically occur between two normal colliders, a trigger collider specifically avoids these interactions, focusing instead on detection and event handling. The deformation of objects upon contact indicates a physical response, which isn't relevant when discussing triggers. Lastly, visual glitches don't pertain to collider interactions directly and would arise from other issues unrelated to how colliders function, emphasizing that the trigger-component design is about detection rather than physical alterations or unintended visual artifacts.