Rachel is training her dog, duke, to bark when there is a knock on the door. she already knows that squeaking a mouse toy will make duke bark automatically. so, she decides to squeak the mouse and knock on the door at the same time to condition duke to bark. what is the unconditioned stimulus?

Rachel is training her dog, Duke, to bark when there is a knock on the door. She already knows that squeaking a mouse toy will make Duke bark automatically. So, she decides to squeak the mouse and knock on the door at the same time to condition duke to bark. The unconditioned stimulus is the squeaking mouse.

the answer to this question is d

answer; (true);