Which statement best describes a purpose behind studying Tule geese migration?

• A. They help explain the behavior of geese in captivity.
• B. They provide data for climate models only.
• C. They focus on migration speeds independent of environment.
• D. To understand how environmental factors influence animal behavior.

Answer: (D)

Understanding how environmental factors shape animal behavior is what this topic is about. Studying Tule geese migration shows how cues like season, temperature, precipitation, food availability, and habitat condition influence when they move, where they go, and how much energy they expend. This helps explain the broader pattern of how animals adjust their behavior in response to changing environments, which is the core idea behind observing migration. The option that best matches this is the one that ties migration to environmental influences on behavior, rather than focusing on captivity, treating migration as climate-model data only, or assuming speeds are unaffected by the surroundings. Captivity-related behavior is not the focus of migratory studies, climate models use migratory data as one piece among many, and migration speed is often shaped by wind, weather, and resource availability, not independent of environment.