Final answer:
When a client arrives at the emergency department with a hyphema, the nurse should position the client in a semi-Fowler's position to reduce the pressure inside the eye and minimize further bleeding.
Step-by-step explanation:
A hyphema is a condition characterized by bleeding within the anterior chamber of the eye.
When a client arrives at the emergency department with a hyphema, the nurse should position the client in a semi-Fowler's position (D). This position, where the head is elevated 30-45 degrees, helps to reduce the pressure inside the eye and minimize further bleeding.