When providing fluid resuscitation in the prehospital setting on a trauma patient, ideally what gauge catheter should you select?

Which of the following is an example of a closed question?

A) "What is your medical history?" B) "Do you have any medical history?" C) "What were you doing when the pain began?" D) "How would you describe your discomfort?"

Usual and customary fees are designed to keep all dental practices in a geographic area from charging significantly more than other practices

a. true b. false