Final answer:
During the Paleolithic or Old Stone Age, people used simple stone tools and did not engage in farming, distinguishing this period from the Neolithic when agriculture began.
Step-by-step explanation:
During the Paleolithic Period in prehistory, people used simple stone tools and did NOT farm. This era, also known as the Old Stone Age, spans from around 30,000 BCE until 10,000 BCE. People of the Paleolithic period were hunter-gatherers and relied on gathering wild plants and hunting animals for food. In contrast, the Neolithic Period marked the beginning of agricultural practices and the use of more sophisticated stone tools. Therefore, the correct answer is c) Paleolithic.