Signs and symptoms of local anesthetic overdose are those of CNS and CVS depression

Which of the following statements regarding oxygen is correct?

A. Oxygen cylinders must always remain in an upright position. B. Oxygen is flammable and may explode if under high pressure. C. Oxygen supports the combustion process and may cause a fire. D. Oxygen is most safely administered in an enclosed environment.

All of the following are examples of secondary preventive measures except:

A. Joint protection instruction B. Energy conservation instruction C. Ergonomic assessment and modification D. Work simplification instruction