Answer:
The "fittest" mice to survive in a forest environment would depend on various factors such as the specific characteristics of the forest, availability of resources, and the predators and other species present in the area.
Generally, mice that are well adapted to forest environments would possess certain traits such as:
Good sense of smell: Forest environments are often dense and may provide cover for predators. Mice with a good sense of smell are better equipped to navigate and find food in such environments.
Good vision: Some mice species have adapted to have good vision to better navigate through their environment and avoid predators.
Climbing ability: Mice that are able to climb trees and other obstacles can better avoid predators and find food sources.
Ability to burrow: Some mice may dig burrows to escape predators or find shelter, and those that are well adapted to digging will be better equipped to do so in a forest environment.
Based on these criteria, mice such as the white-footed mouse and the deer mouse are well-suited to forest environments. These species possess a good sense of smell and vision, can climb and burrow when necessary, and are able to find food sources such as nuts, seeds, and insects in the forest. However, there may be other mouse species that are better adapted to a specific forest environment, and the "fittest" mice would ultimately depend on the specific characteristics of the forest in question.