____ is the ability of one individual to supervise a number of other people or units.

Compared to arteries, veins:

A. have greater muscle content in their walls. B. are a low-pressure system. C. have bidirectional valves. D. rely on gravity for venous return.

Use of prehospital care reports for quality improvement is an example of their ________ use

A) medical B) administrative C) patient care D) legal