58. Given that all the choices are true, which one would best emphasize and illustrate the effectiveness of this biofeedback therapy?
Your Answer is
Correct Answer is F
Explanation
The question stem asks to select the option that shows that biofeedback therapy is effective. According to the first sentence of the second paragraph, because the author had migraines again, he tried biofeedback therapy. So choosing F "headache disappeared" can show the effectiveness of this treatment.