The Paleolithic people of Chhattisgarh likely used stone tools for:

Stone tools were also used for other purposes, such as building shelters and making clothing. However, hunting and food processing were the most common uses for stone tools during the Paleolithic period.

Building temples is a relatively recent development in human history, and it is not something that Paleolithic people would have done. Writing poetry is also a relatively recent development, and it is not something that Paleolithic people would have done. Playing video games is a modern activity, and it is something that Paleolithic people would not have done.

Therefore, the correct answer is: Hunting and food processing.