The correct answer is A) subarctic.
Thousands of years ago the climate of the Bering land bridge was subarctic.
Historians have one theory called the Bering Strait to explain how people from Asia emigrated to America, being the first people to enter the North American territory through the Bering strait, thousands of years ago. A land bridge formed at that time after glaciers meltdown, allowing people to cross from what today is Russia to Alaska, a land path of 50 miles approximately.
