Suppose you're pitching in a baseball game and facing a good hitter. You remember that you struck him out with a fastball last time. You also remember that your coach told you to always try to do the unpredictable, so you decide to throw a curve ball this time. In making this decision you are primarily using your _____.
a. central executive.
b. fight or flight response.
c. modality specific memory.
d. long term potentiation.