The answer is B. - Ivan Pavlov
<span>I think that Rachel is using the cat to condition the dog for appropriate times to bark. Therefore the knock at the door is serving as the unconditioned stimulus in the above described situation. She is trying to teach the dog to bark when there is a knock at the door by using the cat to induce barking.</span>
For this particular problem there will be Infinite solutions
The answer is about 25 percent.
Autism refers to a range of conditions characterized by different kinds of challenges. We know that there is not one autism but many types caused by different combinations of genetic and environmental influences. Around 1/3 of people diagnosed with autism remain non-verbal and have an intellectual disability.