Which adaptation is associated with migratory behavior?

Increased navigational skills are crucial for migratory behavior because these skills enable animals to travel across vast distances, often over unfamiliar terrain. Migration often involves complex routes that require the ability to orient oneself using various environmental cues such as the position of the sun, stars, landmarks, and the Earth's magnetic field. This heightened navigational ability is a key adaptation that facilitates successful migrations, allowing species to find food, breeding grounds, and suitable climates.

As for the other choices, while fur color change, reduced energy storage, and limited social coordination can play roles in various animal behaviors and adaptations, they are not directly linked to the migratory behavior that necessitates precise navigation over long distances. For instance, fur color change may aid in camouflage but doesn't contribute to the navigation aspect of migration. Similarly, reduced energy storage would be counterproductive during migration, where long-distance travel demands substantial energy reserves, and social coordination can vary in its importance depending on the species involved in migration.