Which kind of evidence includes facts that can be observed or reported firsthand?

Pressure exerted on extremities due to a prolonged entrapment, which promotes anaerobic metabolism within tissues is:

a. crush injury b. neurovascular injury c. compartment syndrome d. entrapment alkalosis

A laboratory gets numerous complaints regarding the length of time it takes hematology results to get to the emergency department. What would be an appropriate response?

a. Make this a quality assurance project. b. Ignore the complaints. c. Explain why it takes so long. d. Tell the employees to work faster.