Which of the following could be considered a useful presentation of background research? a. the medical benefits of an amazing new drug are described in a television commercial. b. the results of a previous experiment are presented as an introduction to a new experiment. c. rumors of an interesting phenomenon are described through second-hand accounts. d. a newspaper article recounts an interview with a scientist that took place at a conference.

The answer should be B.The results of a previous experiment are presented as an introduction to a new experiment.

Material that used for presentation of background research should have a credible information. Amazing new drug is described in a television commercial mostly false and it is not backed up by scientific study. Rumor from second-hand accounts definitely not credible. A newspaper is not a scientific study and could give false information.