Which experiment involves the use of classical conditioning?

Classical conditioning is also known as Pavlovian or respondent conditioning it  refers to a learning procedure in which a biologically potent stimulus (e.g. food) is paired with a previously neutral stimulus (e.g. a bell).

Explanation:

Classical Conditioning:

Classical conditioning is also known as Pavlovian or respondent conditioning it  refers to a learning procedure in which a biologically potent stimulus (e.g. food) is paired with a previously neutral stimulus (e.g. a bell).

The three stages of classical conditioning are

Ivan Pavlov conducted a very  famous experiment in which he noticed that the dogs began to salivate in response to a bell  after the sound had repeatedly been paired with presenting food.

In this theory we talk about the unconditioned stimulus occurring  naturally and automatically it  triggers salivating as a response to the food, which is known as the unconditioned response.

After Ivan Palvo associated  the neutral stimulus with the unconditioned stimulus, the sound of the bell alone will started to  evoke salivating as a response.

In the above experiment ,the sound of the bell is now known as the conditioned stimulus and salivating in response to the bell is known as the conditioned response.

the correct answer is d