Final answer:
The patient with chest pain likely has angina and should have nitroglycerin available for treatment, as it helps to alleviate the symptoms by improving blood flow to the heart.
Step-by-step explanation:
The student's question pertains to a scenario where a patient receiving dental treatment complains of severe pain in the chest. Given the medical context provided, the correct answer is: C) Angina, nitroglycerin. Angina is characterized as chest pain or discomfort that occurs when the heart muscle receives inadequate blood flow and oxygen, which is called ischemia. The common treatment for angina is the administration of nitroglycerin, a medication that helps to dilate blood vessels, allowing for improved blood flow and oxygen delivery to the heart muscle.