Miranda notices that her cat salivates as soon as her cat hears the sound of the electric can opener. In this example, the sound of the can opener is the: primary stimulus secondary reinforcer positive reinforcer conditioned response conditioned stimulus

conditioned stimulus

Explanation:

When a biologically potents stimulus gets paired with a stimulus which was previously neutral then this process is known as classical conditioning.The biologically potent stimulus is known as an unconditioned stimulus such as taste of the food which results in a natural response. The conditioned stimulus is the one which was previously just a neutral stimulus however, upon getting paired up with the unconditioned stimulus becomes a stimulus that result in a conditioned response.For example, the sound of the electric can opener is a conditioned stimulus for the cats as this leads to salivation.

It is called the medulla oblongata or people usually call it medulla. it is the lower half of the brain stem continuous with the spinal cord.