The answer would be (D) but It kinda seems like all to me.
The correct answer to this open question is the following.
Although there are no options attached, we can comment on the following.
Aside from the obvious benefits of improving the culture surrounding food, especially in poor neighborhoods, what Ritz has managed to accomplish with his garden walls is to share the idea with other schools in the Bronx neighborhood and other regions. The project is called the Green Bronx Machine, and the idea has reached other parts of the country. This is the creation of professor Stephen Ritz, a teacher of a high school in South Bronx, New York, who had an idea to cultivate fresh food as a school project to teach students the importance of taking care of the environment and to have the proper nutrition to increase the student's health.
