Which of the following identifiers best categorizes game animals based on size classification?

The most appropriate choice for categorizing game animals based on size classification is "Small, Medium, Large." This classification directly pertains to the physical size of the animals, which is a standard approach in ecology and wildlife management.

Categorizing animals by size helps in understanding their habitat needs, behavior, and the management practices necessary for their conservation. For example, small game like rabbits and quail may require different habitat management practices compared to large game such as deer or bears. This classification also assists hunters and wildlife enthusiasts in identifying species and understanding their ecological roles.

On the other hand, the other options do not accurately reflect size classification. For instance, "Big, Small, Migratory" includes a behavioral aspect (migratory) rather than size. Similarly, "Endangered, Common, Rare" focuses on population status rather than size, while "Local, Seasonal, Transitory" pertains to movement patterns and presence in an area rather than physical size. Thus, the best identification method based on size is indeed "Small, Medium, Large."