Answer:
muscles of the veins and arteries, abdominal muscles and liver gravity.
Explanation:
rights: accept the desicion
responsiblites: stop talking to them and dont make a fuss over it
sorry if this isnt the best
A 'Trend' is a large social influence if this is what you are talking about. Trends are something where one person does/wears it (usually a popular person everyone likes) and then everyone else starts doing it.
If it smells rotten and unsanitary (what class are you taking lol? this is just what i'd think)