Carson's achievement in fifth grade has been remarkable. last year in fourth grade, he had occasional problems with distractions and difficulty understanding what was expected, but this year he has no such problems. based on studies of factors related to student achievement, which of the following factors most likely makes the largest impact on carson's success?

a. his teacher's content knowledge in fifth grade subjects
b. his teacher's knowledge and skill in classroom management
c. his increased interest in school
d. his increased ability to follow rules and procedures

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