What does the term "variety" refer to when discussing breeds?

The term "variety" in the context of discussing rabbit breeds specifically refers to a subdivision within a breed that is identified by distinct characteristics such as color, pattern, or fur type. For example, within a single breed like the Holland Lop, there can be various varieties based on different color patterns like blue, tort, or black. Each of these varieties retains the fundamental breed characteristics while diverging in visual traits. This allows breeders and judges to differentiate rabbits more precisely within the same breed category.

In contrast, the other choices describe concepts that do not accurately capture the specific meaning of "variety." For instance, grouping different breeds does not convey the nuanced distinction within a breed itself. Similarly, a class of rabbits without distinct traits would not be classified as a variety since that would imply a lack of differentiation. Finally, referring to all breeds collectively would not address the particularities that define and distinguish varieties within a breed. Therefore, understanding "variety" as a subdivision identified by color or other specific traits provides clarity in rabbit breed classification.