Please help me ! I need help .

Chris would like to conduct a study on the effectiveness of a new substance-abuse treatment program. he has a sample of participants go through the program and he uses as a comparison group people who did not volunteer for the program but were eligible. chris has used a(n) design for his study.

Acar traveling at 65 mile per hour has kinetic energy because of its position on the road. true or false

Which of the following are ways that people in democracies can take part in politics and gonverments