What was the primary source of light used during the Old Stone Age?

A. Electric lights
B. Candles
C. Oil lamps
D. Fire

The primary source of light used during the Old Stone Age

During the Old Stone Age, early humans primarily used fire as their source of light. They used fire for cooking, warmth, and illumination. They also used torches made of sticks and animal fat to light their way in caves and at night. Electric lights, candles, and oil lamps were not yet invented during this time period.