The chamber of the heart that receives oxygenated blood from the lungs is the:

A flame plume that is large enough to reach the ceiling of a room is likely to trigger ________ in the area of origin.

A) a smoke explosion B) full involvement C) back draft D) the sprinkler system

To avoid the higher costs of healthcare, employers:

A) hired younger employees. B) refused to extend health insurance to employees. C) increased employee premium contributions. D) decreased the number of health plans available to employees.