e. decision making because a means that you have not reached a conclusion, be is more of "i only have so much" type of answer, c does not make sense, and definitely not d.
I guess you could say eating disorders are common. In my opinion it just depends on the location one is in. For example, African villages don't get much food, therefore it's common over there. That being said, some long-term consequences may be hurting your overall health. Hope this helped!