So what is the definition of base. A. Pieces are proton donors

B. Bases increase the number of protons in an aqueous solution

C. Bases are protons

D. Bases donate protons to water molecules

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.