Answer:
A) the applications of various tools
Step-by-step explanation:
There were lot of changes between the Neolithic and Bronze Age when it comes to technology. New materials were discovered and the people figured out how to manufacture them. The process by which the materials were made changed, and there was constant development in this field, so there were constant innovations. One thing that remained the same though was the application of the tools. The tools were changing, were becoming better, stronger, more efficient, but they were still used for the same things.