What type of pattern do Northern Fence Lizards have on their back?

The correct choice is the one that describes Northern Fence Lizards as having dark, wavy crossbars on their back. This distinctive pattern helps to break up their outline, providing camouflage against the forest floor and among the rocks and foliage in their natural habitat. The coloration and patterning are crucial for their survival, as they are typically found in wooded areas and can easily blend into their surroundings, making it easier to evade predators.

The dark, wavy crossbars are a key characteristic that distinguishes Northern Fence Lizards from other species, as their pattern is not uniform or plain. Other patterns, such as solid colors with spots or vertical stripes, do not accurately reflect the appearance of Northern Fence Lizards. The presence of markings is crucial in understanding this species and identifying them in the field, with the wavy crossbars being a notable feature that aids in their identification.