What defines a marked breed in rabbits?

In rabbit breeding, a marked breed is characterized by specific markings that distinguish the breed from others. These markings can include patterns such as spots, patches, or other distinct color variations on the body of the rabbit. The presence of these specific markings is what defines the breed and allows for identification within various rabbit show categories.

Other options do not capture the essence of what constitutes a marked breed. A breed that has a solid color lacks the unique defining markings, while a breed that can be any color does not necessitate a specific marking pattern. Similarly, a breed that is the largest in size is unrelated to the concept of markings altogether. Therefore, the focus on specific markings is what sets marked breeds apart in the realm of rabbit showmanship.