Question

The emt is appropriately sizing the airway when she measures:

Answer 1

The emt is appropriately sizing the airway when she measures the distance from the nose to the earlobe.
These emergency medical technicians are obviously trained when it comes to these medical issues, and know how to properly size the airway. In this case, when it comes to the nose airway, this distance between the nose and the earlobe is the way to go.