Statement 1 is correct: Lower Palaeolithic traditions involved the use of large pebbles or flakes for making choppers and chopping tools, hand-axes, cleavers, knives etc.
Statement 2 is not correct:The Middle Palaeolithic is based on the use of a variety of flakes struck from cores for preparing scrapers, points, borers and other tools. Further refinements came in the Upper Palaeolithic stage.
Statement 3 is correct:The Upper Paleolithic Period was characterized by the emergence of regional stone tool industries, such as the Perigordian, Aurignacian, Solutrean, and Magdalenian of Europe as well as other localized industries of the Old World and the oldest known cultures of the New World. Principally associated with the fossil remains of such anatomically modern humans as Cro-Magnons, Upper Paleolithic industries exhibit greater complexity, specialization, and variety of tool types, such as those made of bone, ivory, and antlers, and the emergence of distinctive regional artistic traditions involving paintings and sculpture and musical instruments. The Upper Palaeolithic industries also consist of a variety of flake and core tools like side scrapers, ovate scrapers, notched scrapers, discoid scrapers and unifacial and bifacial flake points. Some of these flakes are produced by the Levallois technique, and the discoid core technique, indicating the persistence of the preceding Middle Palaeolithic traditions. Some of the backed blades could have been used by hafting as barbs to harpoons. The raw material used for the stone tools is fine-grained rock.
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