A TENS unit is ________
A) a surgical procedure to remove plaque and prevent a stroke
B) used to treat chronic pain
C) a unit of measurement for the depth of a coma
D) an electrical recording of the brain waves
B
Explanation: A) TENS is not a surgical procedure.
B) Correct!
C) TENS is a unit, but not a unit of measurement for the depth of a coma.
D) This describes an EEG, not a TENS unit.
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