Final answer:
The NYS BLS protocol states that EMS providers can administer a maximum of three total doses of nitroglycerin to adult chest pain patients without medical direction.
Step-by-step explanation:
According to New York State (NYS) Basic Life Support (BLS) protocol, a maximum of three total doses of nitroglycerin can be given without medical direction to adult chest pain patients.
The correct answer to the question is therefore c) 3.
Nitroglycerin is used to treat episodes of angina (chest pain) in people who have coronary artery disease by dilating the blood vessels to allow more blood and oxygen to reach the heart.
Proper protocol must be followed to ensure patient safety, and NYS BLS protocols govern the maximum dosages that can be administered outside the hospital setting without direct medical oversight.