John Experienced a Head Injury That Resulted in a Sudden

Multiple Choice

John experienced a head injury that resulted in a sudden ability to expertly play piano even though he had no prior music training. A neuroscientist now has the unexpected opportunity to study this case. He should

A) decline because he does not have baseline data about John's abilities.
B) avoid interviewing John's physicians because their assessments might bias his conclusions.
C) complete several assessments before drawing conclusions about the case.
D) find a control case of a person who was trained to play piano.