What major change took place during the neolithic age?

During the Neolithic age, humans across the globe began settling down and farming. People speculate that this is because of the changing climate (the end of the last Ice Age), and population booms. Though they still used stone tools,they also began to domesticate some of the modern animals, like cows. There are also signs of increased conflicts between settlements.

Hope this helps!

The second option is correct according to edgenuity