_______________ is a stimulant found in tea leaves and is chemically related to other stimulants found in coffee and colas.

The unintended adverse response known as summation is due to:

a. unintentionally taking too much of one drug. b. one drug's enhancing the effect of another drug. c. a direct biochemical interaction between two drugs. d. two drugs that have the same effect being given together.

There has been a very serious motor vehicle collision involving a high-profile judge seeking reelection. The judge was traveling at a high rate of speed and crossed the center line, striking and killing a motorcyclist. Newspaper reporters are on location, asking you to describe what happened. Which one of the following statements is most appropriate?

A) "The judge was involved, but I cannot tell you anything that happened." B) "The judge was in the car that hit and killed the motorcyclist." C) "There has been a serious accident in which a person was killed." D) "The accident was not bad, so please leave the scene."