Which economic system relies on the interaction of buyers and sellers?
a.
social
b.
market
c.
traditional
d.
command

The correct answer is B.

Market economies rely on the free interactions of economic agents (households, firms and public sector entities) in the product and factor markets, as the most efficient manner of determining the main economic outcomes: prices and amounts produced and consumed. Efficiency of the market mechanisms would maximize social welfare, in opposition to alternative mechanisms that, for example, rely on goveremnt interventionism and distort the functioning of markets.

what are the others?

donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

hope this !

i googled "who was kolson johanson" and this is the answer i found.

sorry if this is incorrect.