Which of the following is common to the spread of both Christianity and Islam? A: Conquered people were converted to serve as a slave soldiers

B: Leaders enforced higher taxes on believers of other faiths.

C: missionaries travel to teach and convert others.

D: People of other faiths did not have equal rights.

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