Which of the following best describes "-opaque"?

The term "-opaque" refers to the characteristic of a substance that does not allow light to pass through it, making the material nontransparent. This means that objects behind an opaque material cannot be seen clearly or at all. For example, a wall or a piece of cardboard is opaque because you cannot see through it.

Understanding the context of transparency helps clarify why the other options do not accurately describe "-opaque." "Visible" would imply that something can be seen, which contradicts the nontransparent nature of opaque materials. Similarly, "clear" directly opposes the idea of opacity, as clear materials allow light to pass freely, making them see-through. "Bright" pertains to the intensity of light emitted or reflected, which is unrelated to the concept of opacity.

Therefore, nontransparent is the most precise description of "-opaque," acknowledging its defining quality of preventing visibility through a material.