Answer:
b.increasing economic pressure on peasants, who had no other means of influence.
Explanation:
The Yellow Turban rebellion happened in 184AD during the Han dynasty in China. It was led by Zhang Jue. It started majorly as a result of increased famine on farmer and retired soldiers and also an increase in tax to fund government projects.
Umm I think it is because you get to know their facial expressions on stop signs. I know this doesn't help. But I hope this Sparks some kind of answer in your head.