Which Is the BEST Reason Against Using Polygraph Machines at Airports

question 68

Multiple Choice

Which is the BEST reason against using polygraph machines at airports to detect terrorists?

• A)Research has failed to demonstrate that polygraph machines can detect liars at greater than chance levels.
• B)People can be trained to beat a polygraph;we would never catch a single terrorist.
• C)We would detain thousands of innocent people for every terrorist that we identified.
• D)It is estimated that the polygraph would add 20 minutes to the check-in process.

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