The correct answer is letter (A) the provider.
Confirming patients appointments is a good practice for the medical office because it help reduces no-shows such as the medical office can make a cancellation appointments. That will waste physicians time and also take valuable appointment slot away from other patient.
One of the main things that the debate between Madison and Jefferson tells us about the importance of compromise is that it is very rare and sometimes impossible for two people to see "eye to eye" on issues in politics--making compromise absolutely essential if you want to get things done.