Answer:
Option (b).
Step-by-step explanation:
Pain may be defined as a type of signal that sends to the nervous system and determines that the something wrong has been occurred in the body. Pain may be light or sharp depending upon its intensity.
The pain can be controlled by taking specific drugs. The unrelieved pain may cause the prolonged stress response in the body. This response can generate the system or cascade of harmful effect system. The pain sometime can be unbearable and changes the physiology of body.
Thus, the correct answer is option (b).