Answer: CS(Conditioned Stimulus )
Explanation:
Conditioned stimulus is the factor that was at neutral state at previous time but after getting connected with unconditioned stimulus it produces a trigger in the form of conditioned response.
According to the question, door closing is conditioned stimulus because door gets combined with the closing action done by Dr. Meyer which generates a trigger that indicates students about pop quiz.
Hey there,
In English capitalisation occurs when when the word is the first word in a sentence or it’s a name.
In this case the answer should be the word “is”.
This is because “is” is the first word in the sentence.
Hope this helps!!