Answer:
classical conditioning
Step-by-step explanation:
Classical conditioning: In psychology, the theory of classical conditioning was proposed by one of the influential psychologists named Ivan Pavlov, who believed that this theory is a form of learning in which a particular stimulus is being linked with that of another stimulus to produce a specific response.
Classical conditioning involves a conditioned stimulus or CS that is being connected with an unconditioned stimulus or UCS and hence produces a conditioned response or CR which is a formerly neutral stimulus.
In the question above, the given statement signifies the importance of classical conditioning.