Which of the Following Statements Is True About Determining Exposure

question 111

Multiple Choice

Which of the following statements is true about determining exposure levels of toxins? 

• A) Since there is considerable uncertainty involved, exposure levels are set at 1/100 or even 1/1000 of the level expected to cause harm. 
• B) Since toxic exposure levels can be determined with great accuracy, limits tend to be set just under the harmful level to accommodate the chemical and pharmaceutical industries. 
• C) Since the actions of toxins, and combinations of various toxins, are well understood, there is no need for continued toxicity studies involving humans or other animals. 
• D) Citizens can rest assured that there will be no surprises arising from the toxic effects of chemicals, or combinations of chemicals, because of the extreme certainties arising from the toxicity studies done to date.

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Definitions:

Tequila

A distilled beverage made from the blue agave plant, primarily in the area surrounding the city of Tequila, Mexico, known for its strong flavor and alcoholic content.

Classical Conditioning

An educational procedure in which the frequent pairing of two stimuli causes a response initially triggered by the second stimulus to be eventually triggered by the first stimulus alone.

Aversive

Refers to an unpleasant stimulus that induces changes in behavior.

Vomiting

The forceful expulsion of stomach contents through the mouth, a protective mechanism to remove harmful substances.