The correct answer is C) 15,000 BCE - 5,000 BCE.
The other options of the question were A) 5000BCE - 3000 BCE. B) 3000 BCE - 1000 BCE. D) 2000 BCE - 1000 BCE.
According to the graph above, the world population remained relatively unchanged during 15,000 BCE - 5,000 BCE.
We are talking about ancient times, in the times of ancient civilizations such as the Sumerians, the Indus Valley, Egypt, and Chinese civilizations. That is why the population remained basically the same during the above-mentioned period. In those far-away years, humans stopped being nomads and started to settle in on a place to develop agriculture techniques. The Sumerians, for instance, settled in the middle of the Euphrates and Tigris Rivers in the Middle East region of what today is Iraq. The Indus Valley civilization settled in next to the banks of the Indus River, as well as the Egyptians, but they did it next to the Nile River.
