In 3D modeling, which object is invisible in the final render but blocks geometry behind it, not affecting the background?

In 3D modeling, which object is invisible in the final render but blocks geometry behind it, not affecting the background?

• A. MAX object
• B. Matte object
• C. Mesh
• D. Object

Answer: (B)

A matte (holdout) object is used to mask parts of a scene: it remains invisible in the final image, but it occludes or blocks the geometry behind it. This lets you control what parts of other objects are visible or hidden in the render (and in the alpha channel for compositing) without changing the background itself. In other words, it acts as a stencil that prevents underlying geometry from showing through, while the matte itself doesn’t contribute color or lighting to the final render. The other options are just ordinary geometry or generic terms, which would render normally and wouldn’t provide this masking behavior.

A matte (holdout) object is used to mask parts of a scene: it remains invisible in the final image, but it occludes or blocks the geometry behind it. This lets you control what parts of other objects are visible or hidden in the render (and in the alpha channel for compositing) without changing the background itself. In other words, it acts as a stencil that prevents underlying geometry from showing through, while the matte itself doesn’t contribute color or lighting to the final render. The other options are just ordinary geometry or generic terms, which would render normally and wouldn’t provide this masking behavior.