After a dog had been conditioned to salivate at the sight of meat powder, the meat powder was presented to the dog every three minutes and held just out of the dog's reach. Over the course of several trials, the amount of saliva secreted by the dog decreased to zero, indicating that had occurred.

A. negative reinforcement
B. biological preparedness
C. extinction
D. spontaneous recovery

C. Extinction.

Explanation:

In psychological terms, extinction can be explained as how we can learn something new about a situation. It is not the same as forgetting though, and that is why you will learn that the animal can reverse to the undesired behavior sometimes.

Extinction becomes a learning process, as its neural substrates are now beginning to be understood. Though it is sometimes hard to distinguish classical conditioning from other forms of associative learning.

answer; ///i believe that the correct answer is (d) when each house of congress passes a different version of a bill and those difference must be

answer; (c) a law code that provides believers with a set of pratical laws to regulate their daily lives