Which method for treating arthritis is an example of pseudoscience?

diet

drugs

exercise

magnets

The answer is magnets.

Pseudoscience is a belief and not a scientific method. Diet, drugs, and exercise cannot be examples of pseudoscience since it is known they can improve the condition of arthritis. But, on the other side, magnets are not scientifically confirmed as useful in arthritis treatment. There is only a belief that magnets can cure arthritis. Therefore, magnets are the exaple of pseudoscience.