What is the definition of opacity in digital design?

Opacity in digital design refers to the degree to which an object blocks light, which is typically expressed as a measure of transparency. This means that the correct answer describes not only the concept of transparency but also its opposite, which is opacity. Specifically, opacity ranges from fully transparent (completely see-through) to fully opaque (not see-through at all).

When an image is labeled as having a low opacity, it means it has a higher level of transparency, allowing underlying layers or colors to be seen more clearly. Conversely, high opacity means the image is solid and does not allow light to pass through it. This concept is crucial in design as it influences how layers interact visually, allowing designers to create effects and compositions that draw attention and convey certain moods or themes.

The other options touch on different aspects of digital images and design but do not accurately encapsulate the technical definition of opacity itself.