One difference between the technology of the Plano and that of the Clovis and the Folsom is that the Plano hunted bison using stone weapons. perfected a single type of stone point. made clothing from animal hides. developed a variety of stone points.

Option:  developed a variety of stone points.

Explanation:

Paleo Indians were the first people who lived in North America. They arrive from Siberia through passing the Bering Land Bridge. They killed animals for food and survival in the cold and wild environment. They also gathered roots, berries, wild plants, nuts for food. Plano, Clovis, and Folsom are three different Paleo-Indian cultures. Plano culture found in Colorado.  The Plano developed a variety of spears with sharp points made of stone to hunt animals.

i think it’s a i hope that right : )

the correct answer is a) egypt and china.

egypt and china are two of the world’s oldest civilizations known by man. both ancient empires have left a great historic and cultural legacy to the world through archeology. both civilzations developed complex social relations, had deep religious beliefs, had dominion of agriculture and left writing records to understand their customs and culture.

among the requirements to consider a civilization, we find urbanization, writing records, a place of residence, agriculture methods, technological specialization, means of transportation, currency, population density, social stratification, and political integration.