Pavlov taught a dog to salivate at the sound of a musical tone by repeatedly pairing the tone with food. in this example, the musical tone is the before conditioning and the after conditioning.

The answer is neutral stimulus; conditioned stimulus. A neutral stimulus is a spur which originally makes no exact answer except concentrating responsiveness. In classical conditioning, when put together with an unconditioned stimulus, the neutral stimulus turn out to be a conditioned stimulus.

answer; /// i believe its; // being treated lovingly and predictably by caregivers and learning to trust;

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.