Ed noticed that whenever he used his electric can opener, his cat would come into the kitchen and act hungry—drooling and mewing pitiably. He reasoned that because he used the can opener to open the cat’s food, the sound of the can opener had become a(n) .

conditioned response.
unconditioned response.
conditioned stimulus.
unconditioned stimulus.

conditioned stimulus

Explanation:

The sound of the can opener only triggered this response once it became linked to something, making it rely on a condition

loris malaguzzi was the founder of reggio emilia’s educational philosophy and together with the comune and many local administrators he participated in the birth and building of reggio emilia’s network of municipal preschools (3-6) and infant-toddler centres (0-3).