Concept:Microliths are small stone tools used as blades or arrowheads, and they define a specific later phase of the Stone Age.
Explanation:The Early Stone Age is marked by large tools like bifaces, cleavers, picks, and choppers.
The Middle Stone Age is known for prepared cores and facetted butts.
The Late Stone Age is distinguished by the production of small, finely shaped stone tools called microliths.
The Iron Age introduced metal weapons and tools, replacing stone technology.
Since microliths are tiny stone implements, they belong to the Late Stone Age.
Answer:B. Late Stone Age.