Walking, running, any exercise that increases heart rate
Answer:
Option (d).
Explanation:
The individuals generally responses to the sudden noises and like to listen the noise that are pleasant to their ear. They develops a type of learning or memory against that noise.
Michelle has put on the headphones and listen white noise. She always click the button on listening the noise. She is more likely to develop the more false alarm that activates when she listen to that noise. She has developed a kind of response against the white noise.
Thus, the correct answer is option (d).
