Definitely not B or C so it has to be either A or D.
The correct answer is letter A. Pain receptor - tissue injury. Nociception refers to the processing of harmful stimuli in the nervous system. The nociceptors are also known as "Pain receptor" that responds only to tissue damages cause by either mechanical, thermal stimulation.
Answer: What do you mean solid measurement is there a pic with it?
Explanation:
It is true because heart attack is because of stopping of heart beats which will
