The Paleolithic, Mesolithic and Neolithic eras occurred during the Stone Age. The correct option among all the options given in the question is option "C". The Stone Age is actually a large period of time and is considered to have covered around 3.4 million years. The Stone Age is thought to have ended anywhere between 6000BCE and 2000 BCE. It was the age when stones were widely used to serve different purposes of the people living during that time. The stones were sharpened and widely used as hunting tool by the people of the Stone Age.