It's shown to increase stamina
Answer: Iron
Explanation:
According to the Food and Drug Administration (FDA), a commodity is a good source of a nutrient or vitamin if it provides between 10% and 19% of the Daily value of the nutrient which is the recommended amount of that nutrient to take per day.
From the label we see that Iron provides 11% of the Daily Value which means that Luigi's Manciotti is a <em>good source</em> of Iron.
