What was the main focus of the text about the migration of Tule geese?

• A. Their annual winter migration toward southern regions
• B. Their breeding grounds in spring
• C. Their feeding patterns in summer
• D. Their population dynamics during the fall

Answer: (A)

The focus is on Tule geese' annual winter migration toward southern regions. The passage centers on how they move each year to milder climates and available food, outlining typical routes, stopovers, and timing of departure and arrival. This makes migration the main topic, rather than where they breed in spring, what they eat in summer, or how their numbers change in fall. Any details about breeding grounds, summer feeding, or fall population changes would be supporting context, not the core subject.