Which effect can be applied to add depth to your 3D compositions?

Applying Bevel and Emboss to a layer in Adobe After Effects is an effective means of adding depth to your 3D compositions. This effect enhances the visual appearance of an object by altering its edges and surface, making it appear more three-dimensional. Bevel and Emboss manipulates the light and shadow on the edges of shapes, giving the perception of raised or recessed surfaces. This creates a realistic depth that enhances the overall dimensionality of your composition.

Other effects, while useful, do not contribute depth in the same way. Gaussian Blur, for example, is primarily used to soften edges or create a depth of field effect but doesn't inherently provide three-dimensional characteristics. Drop Shadow can suggest depth but is limited to one direction and doesn't modify the object's actual surface appearance. Shading Effects, while also useful for simulating light, may not achieve the same level of defined dimensional quality that Bevel and Emboss provides. Therefore, Bevel and Emboss is the most appropriate choice for effectively creating depth in a 3D environment within After Effects.