A(n)_____ is a machine that monitors changes in the body and attempts to determine whether someone is lying.
A)pantograph
B)electromyograph
C)polygraph
D)barograph

Question

Quizplus · Accepted Answer

A polygraph, also known as a lie detector, measures physiological responses such as breathing rate, blood pressure, and sweat gland activity while a person is questioned in order to detect deception. A pantograph is a mechanical instrument used for copying or drawing designs, an electromyograph measures electrical activity in muscles, and a barograph is an instrument that measures atmospheric pressure.

A(n)_____ Is a Machine That Monitors Changes in the Body