Final answer:
The tool depicted is from the Neolithic period, reflecting a dietary diversification that resulted from the adoption of agriculture and animal domestication. The correct answer is A. Neolithic; diversified.
Step-by-step explanation:
The tool depicted is from the Neolithic period and indicates that humans diversified their diet compared to previous periods. The correct answer is A. Neolithic; diversified. During the Neolithic Age, or the final phase of the Stone Age, human communities transitioned from a lifestyle of hunting and gathering to one that was more settled, with the introduction of agriculture and animal domestication. This period is also known as the Neolithic Revolution, a transformative era in human history that saw the development of farming practices, leading to the growth of larger populations, the establishment of permanent settlements, and the ability for people to engage in specialized labor due to increased food surpluses. A diversity of stone tools was employed during this time, including grinding tools used for processing grains, which contributed to changes in diet and lifestyle.