题目选项分析

Geese initially begin moving from north to south, because that way is the direction that warm weather in the winter lies, but they then return to northern latitudes in the summer, seemingly driven by some instinctual consciousness before repeating the process, year after year.

Geese initially begin moving from north to south, because that way is the direction that warm weather in the winter lies, but they then return to northern latitudes in the summer, seemingly driven by some instinctual consciousness before repeating the process, year after year.