Answer:
Classical conditioning.
Step-by-step explanation:
Classical conditioning is illustrated as the process of learning through linking of two distinct stimuli(biological and environmental). In such a process, the new learned behavioral response is an outcome of the association of the two stimuli.
As per the given description, Renne's behavioral response(fearing to stay home alone) exemplify the new learned behavior is the product of pairing of the conditioned stimulus(clicking sound) with the unconditioned stimulus(a sense of fear). Thus, this situation exemplify 'classical conditioning' as her fearful response that avoids her to stay alone at home is the learning through associating the fear she feels due to the clicking sound at night.