What color can the bellies of Northern Fence Lizards vary to?

The correct option indicates that the bellies of Northern Fence Lizards can vary in color from whitish to greenish blue to pale blue. This variation is characteristic of the species and can be attributed to their natural habitat and behavioral adaptations. The lighter, reflective colors can help with thermoregulation, allowing the lizards to effectively absorb or reflect sunlight based on their environmental needs.

Understanding the physical characteristics of the Northern Fence Lizard, such as belly coloration, is crucial for identification and studying the species' ecological roles. These colors could also play a part in mating displays or territorial behaviors, helping to signal health and vitality to potential mates or rivals within the species.