CertiPort Practice Exam 2025 – The All-in-One Guide to Master Your Certification!

Adjusting the opacity of a layer primarily allows for blending the layer's content with the underlying layers. When the opacity of a layer is decreased, it becomes more transparent, allowing the colors and details from layers beneath to show through. This blending can create various visual effects, giving a sense of depth or softness to the overall image.

While other options touch on aspects related to layers, they do not directly relate to the concept of opacity. Increasing the contrast primarily involves changes to color levels and is not achieved through opacity adjustments. Hiding parts of an image can be done by reducing opacity but is not the main purpose of it, as complete hiding requires a layer mask or deletion of the content. Changing the color of the layer is typically done through color adjustments rather than by adjusting opacity alone. The unique ability of opacity is to seamlessly merge the visual properties of layers, which is why blending with the colors beneath it effectively captures the essence of what adjusting opacity can accomplish.