HELP! The democratic form of government flourished in ancient Greece, and continues to this day to provide rules and a framework for many countries, including the United States. Why has this form of government lasted over 2,000 years, and how has it changed from the time of Pericles to today?

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