Answer:
Unconditioned Response
Step-by-step explanation:
Unconditioned response is an automatic reflex that occur in response to an unconditioned stimulus. The response are natural and innate and are often not learnt.
The response of the chopper by salivation at the sound of the CD is unconditioned, it is a reflex action that occur due to an action that was taken which was the sound of CD.
They did not learn the action but they know how to respond because it is innate.
When an individual salivate to a nice smell of food it is unconditioned response, the response was triggered by the action and it is a reflex.