It is believed, according to the specificity theory that pain has it's own set of receptors and nerve endings that is assigned to perceive pain. There are specialised peripheral receptors that react to 'damage' caused by the specific pain. So, this theory of specificity is classified as pain and pain perception being it's own independent sense just like seeing, hearing and feeling and tasting etc.
C. relates the amount of pain to the amount of soft tissue injury.
Explanation:
Specificity theory of pain, which is one of the first modern theories of pain, states that there are unique sensory receptors and sensory fibers that are responsible for transmitting of signals of pain to the part of the brain to interpret pain through neural pathways, which are different from other systems of sensory sensation like vision. It holds that these sensory receptors of pain respond to damage, and thereby sends the signals to the brain. According to this theory, the amount of pain the brain perceives can be related to the amount of soft tissue injury, as pain is produced by impulses transmitted to the pain center in the brain as a result of an injury.
