Cognitive Learning Theorists Believe That the Most Important Factor in Learning

Cognitive learning theorists believe that the most important factor in learning through classical conditioning is:

A) the time delay between the conditioned stimulus and the arrival of the unconditioned stimulus.
B) how often the conditioned stimulus and unconditioned stimulus are paired.
C) the order in which the conditioned stimulus and unconditioned stimulus are presented.
D) how reliably the conditioned stimulus signals the arrival of the unconditioned stimulus.