I would say the third answer
Props to Bmxlife, answering the question by literally doing what the answer is. A. Boredom. Respect!
The children in the district are so poor and some of them so pathetic that I suppose the struggle to live has been so great you could not think much about what you fed the mind, but I came away feeling that right there, in one of the biggest and richest states in the country, we had a big area that needed books and needed libraries to help these schools in the education of the children, and, even more, to help the whole community to learn to live through their minds.
There are several critics on the issue of students taking snacks or food to class. Some teachers say that it will cause too much distraction, reducing student's ability to learn as they will share snacks and will be looking at what other students brought to class.
However, consider the fact that middle school learners are growing at an incredible rate. Their body needs energy and their minds get tired if they spend too much time withouth eating. Food is like fuel to the brain. Allowing snacks will actually increase sutdnet's ability to learn as it will take away the distraction of hunger.