Why is appropriate citation important? What are the consequences of not giving proper credit to the source from which materials are extracted?

the correct option is c

answer; engaging in effective public relations;

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.