Which of the following accurately describes a deer mouse?

The description that a deer mouse has a grayish brown coat with white feet is accurate and aligns with the characteristics of this species. Deer mice are known for their distinctive fur coloration, which typically features a combination of gray to brown hues on their back, making them well-camouflaged in their natural habitat, while their feet are notably white. This color pattern is a key identifying trait and helps differentiate them from other small mammals.

Other descriptions do not accurately represent the deer mouse. For instance, claiming that it is predominantly white does not capture the overall coloration and would lead to confusion with other species. The assertion about aggressiveness compared to the meadow vole lacks specific behavioral evidence to make such a comparison valid, as different species have varying interactions based on context. Lastly, the reference to a yellowish brown back does not reflect the typical grayish brown color associated with deer mice and thus is misleading. Overall, option B provides the most accurate depiction of this species.