Use the following to answer question: 
-(Table: The Utility of Macaroni and Cheese) Use Table: The Utility of Macaroni and Cheese.Carmen loves eating macaroni and cheese on Thanksgiving.The marginal utility she derives from the second serving she eats is _____ units.
Definitions:
Agricultural Products
Goods derived from farming and agriculture, including crops, livestock, and products derived from them.
Fixed Costs
Costs that do not change with the level of output or activity; they remain constant regardless of business performance.
Family Labor
Work performed by family members for their own family's business or agricultural activities, often unpaid or compensated differently than external labor.
Fertilizer
A chemical or natural substance added to soil or land to increase its fertility and enhance plant growth.
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