The correct answer is: a) Mesolithic age.
Microliths are small stone tools that were used during the Mesolithic period. They are typically made from flint or other hard stone and are often very finely worked. Microliths were used for a variety of purposes, including hunting, fishing, and woodworking.
The Mesolithic period was a time of transition between the Paleolithic and Neolithic periods. It began about 10,000 years ago and ended about 5,000 years ago. During the Mesolithic period, humans began to live in larger groups and to develop more complex technologies. They also began to domesticate animals and plants.
Microliths are found in many parts of the world, including Assam. They are a valuable tool for archaeologists, as they can help to date sites and to understand the cultures of the people who made them.
The other options are incorrect because:
- The Neolithic age was a time when humans began to farm and to live in permanent settlements. Microliths were not used during this time.
- The Paleolithic age was a time when humans were hunter-gatherers. Microliths were used during this time, but they were not as common as they were in the Mesolithic age.
- The Bronze age was a time when humans began to use bronze tools and weapons. Microliths were not used during this time.