The duration of the Mesolithic period is from about ______ years ago to ______ years ago.

Correct option is C

The period when we find environmental changes, beginning about 12,000 years ago till about 10,000 years ago is called the Mesolithic (middle stone).
 
The Mesolithic period, also known as the Middle Stone Age, is a prehistoric era that falls between the Paleolithic (Old Stone Age) and the Neolithic (New Stone Age). It is characterized by the transition from a nomadic, hunter-gatherer lifestyle to a more settled existence. The Mesolithic period is generally dated from aThe Mesolithic period varied in terms of cultural and technological advancements across different regions of the world. It laid the groundwork for the subsequent Neolithic revolution, during which agriculture became the dominant mode of subsistence and societies transitioned to a more settled lifestyle around 10,000 to 5,000 BCE, although these dates can vary regionally.