You Often Experience Numbness and Pain in the Thumb and First

Multiple Choice

You often experience numbness and pain in the thumb and first two fingers on your right hand.You go to the doctor who suspects that carpal tunnel syndrome is the reason for the numbness and pain.The doctor then orders a simple test to see how fast nerve impulses are moving up and down your arm.The doctor's preliminary diagnosis of carpal tunnel syndrome is a(n)

A) theory.
B) fact.
C) experiment.
D) hypothesis.