The framers created article 5 to ensure that
a) the constitution never changes
b) the constitution would be a living, breathing document that would change with the times
c) the constitution would come second to the state constitutions
d) the states could not add laws in their state constitutions without going through the congress first

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.