Sugar can be listed in many different forms except: corn starch, corn syrup, high fructose corn syrup, maltose

the answer would be  

c. neighborhood watch

hope this .

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.  

there should be recorded video of the class under the assignments for the day