A makes the most sense in this question :)
Your answer is A
Hope this helped!!
-Alex
Researchers working along with Doctor Levitin studied patients who were about to have a procedure. Participants were asked to either listen to music or take pills. Scientists tracked patient's ratings of their own worrying, as well as the levels of Cortisol.
The results were fascinating; the participants who decided to listen to music were more relaxed and less stressed than their counterparts who took medication.