(A) "The food pyramid is a graphic that shows how much of each food group to eat daily" This wouldn't be the answer, because it's talking about the food pyramid, and the food groups. The topic that the student is writing is based on the benefits of a plant-based diet.
(B) "Around the world, it is customary for people to share meals together" OK, one, this is an unimportant detail. Again, the student is writing about the benefits of a plant-based diet. This answer choice is talking about sharing meals together. For all we know, it could be a meat meal or a fruit meal, etc.
(C) "Many of the medications that people use today are made from products found in nature" This answer choice is the best answer, because it says medications are made from products in nature. Plants are nature, and this is a good benefit that talks about plants.
(D) "Vegetarians choose to avoid eating meat for health reasons or for moral reasons." This wouldn't be the answer, because vegetarians are people who basically eat vegetables and not much of other foods. Also, this isn't a benefit for a plant-based diet. Better yet, this is just a detail. This would probably be better used in an argumentative essay about vegetarians vs non vegetarians.
