What blood vessels carry oxygen and nutrients that aide in cellular processes? a. fibers

b. capillaries

c. arteries

d. veins

B Capillaries are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow oxygen, nutrients, carbon dioxide, and waste products to pass to and from the tissue cells

Explanation:

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when you rub, you also apply pressure, that pressure can urge the poop to come out. i think that when your rubbing, you also might be slightly breaking it up and that can further fill the stomach.  

according to e2020 te answer is c. continuity.