Final answer:
The significance of the spear points found at the East Wenatchee Clovis site lies in their sophisticated design as Clovis points, which were specially crafted to be attached to shafts for effective hunting of big game.
Step-by-step explanation:
The spears points found at the East Wenatchee Clovis site were significant because they were finely worked, fluted stone points known as Clovis points. These tools were used for hunting big game such as mammoths and mastodons. They were skillfully crafted by chipping and shaping high-quality stone into sharp-sided projectiles, which were then attached to wooden shafts, enabling them to be used as spears or other hunting tools such as darts.
The development of such stone tools, including the use of hafting technology, allowed for a more efficient hunting process, increasing the survival odds of the Clovis people. Clovis points are characterized by being long, leaf-shaped, and bifacial, flaked on both sides. The use of Clovis points is indicative of the sophisticated tool design and hunting techniques developed by the Paleo-Indians during their migration across North America.
Given the option provided in the question, the closest significance of the spear points would be a) They were specially designed to be attached to spear shafts, thereby highlighting the innovation in tool-making and hunting methods employed by the Clovis people in the Paleolithic era.