According to Rachels, one major problem for the Memory Theory of personal identity is what?
1. One person's memory may be better than another person's memory.
2. Memory is notoriously unreliable.
3. Sometime we really can't remember who we are.
4. The Same Body Theory

Which of the following  bestillustrates a negative reinforcer?               a.  copland gives up candy to stave off chronic acid indigestion.    b.  nancy learns that she prefers chocolate over vanilla.    c.  carmine changes his major to english lit after failing a math exam.    d.  on a hot day, lindberg always drinks lemonade.