Which BEST explains why the costs of some federal government programs may outweigh the perceived benefits? A Programs initiated at the federal level must be replicated at the state level. B Once legislated, the costs of programs are fixed except for national emergencies. C The government may have collected less in taxes than had been anticipated. D A program may have consequences that are more expensive than expected.

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a. static group comparisonb. pretest-posttest control group designc. control-group-time-series designd. nonrandomized control-group pretest-posttest design