The first preference has to do with how you're ENERGIZED. Take a minute to look these two options over and give it some thought... 

           COLUMN A                            COLUMN B

  Tolerate noise and crowds.       |   Avoid crowds and seek quiet.
                                   |
  Talk more than listen.           |   Listen more than talk.
                                   |
  Communicate with enthusiasm.     |   Keep enthusiasm to self.
                                   |
  Be distracted easily.            |   Concentrate well.
                                   |
  Meet people readily and part-    |   Proceed cautiously in meeting people &
      icipate in many activities.  |      participate in selected activities.
                                   |
  Blurt things out w/o thinking.   |   Think carefully before speaking.
                                   |
  Parties recharge your batteries. |   Time alone recharges batteries.
                                   |
  Hates to do nothing. On the go.  |   Needs to have time to reflect.
                                   |
  Likes working or talking in      |   Would prefer to socialize in small
       groups.                     |      groups or just do job "by myself."
                                   |
  Likes to be center of attention. |   Content being on the sidelines.

Now, think carefully. You might wanna say you're both. We all are. But the key is, "what are you more COMFORTABLE doing?" Go with your gut, and pick what you feel is the best answer.