After a Conditioned Response Is Extinguished, an Animal Is Given

Multiple Choice

After a conditioned response is extinguished, an animal is given 24 hours of rest. What will the animal do if, the next day, it is presented with the CS?

A) It will not respond to the original CS.
B) It will resume responding to the original CS.
C) It will appear to be confused and frustrated, alternating between responding and not responding to the original CS.
D) It will respond first to the original CS, and, if no US is presented, it will respond indiscriminately to any and all stimuli presented.