What action should the receiver take?Should I begin research at the library?How should the sender contact the receiver?What will happen if the receiver does not take action?What does the receiver need to know about this topic?

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.