Answer: alternative D.
Explanation: The animals that go through this process understand that everytime they drink the unusual-tasting liquid they will be injected, being that a very unpleasant series of events. They are conditioned, therefore, to be afraid of the unpleasantness of this process by associating pain to the actions that are part of it.
Dimensions of health cover everything from our physical health to our mental health.
And
many studies have shown that our physical and mental health heavily
affected each other. It's common to see some one with mental problem
develop physical problems because of it
