Final answer:
The patient presentation that would require the EMT to don a HEPA respirator is fever, a cough, and night sweats.
Step-by-step explanation:
The patient presentation that would MOST likely require the EMT to don a high-efficiency particular air (HEPA) respirator is Option B) Fever, a cough, and night sweats.
This presentation suggests the possibility of a respiratory infection, which could potentially involve airborne pathogens. The use of a HEPA respirator is recommended in situations where there is a risk of exposure to airborne infectious agents, such as tuberculosis or severe acute respiratory syndrome (SARS).
A HEPA respirator provides a high level of filtration and is designed to protect the wearer from inhaling airborne particles, including infectious agents.