After overhearing the following statement from Chef Vert's students during their study group, which one do you think received the best grade on the test on salad preparation?
a. Celeste: "I like to arrange my salad so that it covers the rim of the plate."
b. Germaine: "The perfect salad contains as many colors as you can fit on the plate."
c. Mathilda: "I cut salad ingredients in large enough pieces so that my customers will be able to identify them."
d. Roberto: "I think it is essential to make sure that the ingredients of a salad lie as flat as possible on the plate so that customers have an easy time picking them up with their fork."