B, because in all truth and honesty, stress is truly inevitable. Also, use process of elimination. I hoped that helped :)
Answer:
True
Explanation:
Peristalsis is the wave-like motion of the walls of the alimentary canal that allow food to move along the lumen of the alimentary canal towards the posterior (anus). These waves are powered by the contraction and relaxation of the smooth muscles.
A)Demographic; because the census studies things such as births,death, and even disease which show changes in human population
