I'm pretty sure the answer to this question is C. but not so sure can someone help me out and pls have a legit answer like maybe explain why its right or if its wrong can you tell me the answer Pls

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire

When there are advances in technology, such as the personal computer, how might business productivity change? a) productivity is separate from technological advances so there is no impact. the new technology can replace outdated, less efficient, machinery. o) the businesses' products will no longer be demanded. d) manufactured items will be made elsewhere.

Explain when conformity is beneficial and when it is harmful. give examples of both?