The Land Bridge Theory describes what?

• A. It claims people arrived by spaceship
• B. There is no evidence for migration
• C. It suggests that Indigenous people migrated from Asia to North America via a land bridge over the Bering Strait during the last Ice Age
• D. People originated in North America

Answer: (C)

The answer describes a migration route opened by lower sea levels during the last Ice Age, when a land connection appeared between Asia and North America across the Bering Strait. This land bridge, called Beringia, allowed people and animals to move from northeastern Asia into North America as glaciers locked up water and lowered sea levels. The idea fits with what we know about how humans first spread into the Americas: populations could walk across a continuous land path rather than crossing open ocean.

This option is the best because it directly states the mechanism and the time frame tied to the Ice Age. It’s supported by archaeological finds and genetic evidence that indicate early peoples moved from Asia into North America through this land corridor.

The other statements don’t match this explanation. Claiming people arrived by spaceship contradicts the well-supported migration model. Saying there is no evidence ignores substantial archaeological and genetic data. Suggesting that people originated in North America describes a different origin theory, not the pathway described by the Land Bridge concept.