Which are secondary sources? Select three options.

documentary about the Great Depression
textbook chapter about economic markets
book of historical fiction written about Dust Bowl refugees
letter home written by someone during the Great Depression
signed federal law aiding people affected by the Great Depression

1,2,3

Explanation:

i think its the outcome of people's preferences.

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.