Pavlov placed meat powder in the mouths of the dogs, and they began to salivate. pavlov's student noticed that after a few days the dogs began to salivate at the sound of the student's footsteps. the salivation to the sound of the footsteps was a:
a. positive reinforcer
b. conditioned response
c. secondary reinforcer
d. primary reinforcer
e. unconditioned response

The correct answer is option e.

Explanation:

Pavlov postulated and perform several tests of classical conditioning. An unconditioned response is a response that occurs naturally in reaction to the particular unconditioned stimulus or trigger action. The footsteps of students is the unconditioned stimulus because it triggers the feeling of hunger which has no direct connection.

Thus, the correct answer is option e.

i want to say death; parole, probation, and fines are still being used all the time.

f 5 , h