When a focus group deals with a potentially sensitive topic, which of the following statements about providing confidentiality to focus group participants is correct? a. the researcher cannot control what participants repeat about others outside the group. b. using pseudonyms in reports removes the concern about any confidences shared in the group. c. if group members know each other confidentiality is not an issue. d. if group participants sign confidentiality agreements, the researcher can guarantee confidentiality.

Cooperation among oligopolies runs counter to the public interest because it leads to underproduction and high prices. in an effort to bring resource allocation closer to the social optimum, public officials attempt to force oligopolies to compete instead of cooperating. consider the following scenario: suppose that the presidents of two auto manufacturing companies exchange text messages in which they discuss jointly raising prices on their new lines of hybrid suvs. this illegal communication would violate which of the following laws? the sherman antitrust act of 1890 the robinson–patman act of 1936 the celler–kefauver act of 1950 the clayton act of 1914