Marketing research firms seldom conduct qualitative research for ad agencies. are one of the most widely used types of collateral service organizations. are not typically used by ad agencies. typically do not provide quantitative market research services. can gather only subjective information.

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.

i would say iii (3) because in order to compare a price you have to use as a reference other near stores because it's its

hope i explained myself

the answers are

a, b, c, & e.

start networking with people and see what is availble