The correct answer is A) distraction.
The technique Jay is using to control his pain is "distraction."
When Jay feels so much pain, he focuses on his favorite music to distract his mind from the pain and use a new remedy. What he is doing is putting away the feeling of pain in order to focus on something he loves so much that is his music. Trying to distracting the mind while taking his medicine or trying new methods, is what helps him overcome the acute pain.