What defines an albino rabbit?

An albino rabbit is characterized specifically by its distinct lack of pigmentation, which results in a white coat along with pink or red eyes. This lack of color is due to a genetic mutation that affects the production of melanin, the pigment responsible for the color of fur and eyes. Therefore, the description of a pink-eyed, white-furred rabbit accurately matches the defining features of an albino rabbit.

The other options describe variations of coloration and eye color that do not fit the criteria for an albino. For instance, a rabbit with black fur and red eyes doesn't exhibit the white fur associated with albinism. Similarly, a rabbit with brown fur and blue eyes or a white rabbit with grey spots contains pigmentation that is absent in true albino rabbits. These attributes further distinguish the authentic characteristics of albinism in rabbits, reinforcing the correctness of the selected answer.