A) the amount of energy produced from the burning of food by the body. B) how a serving fits into the daily diet. C) a substance that is ingested, digested, absorbed, and used by the body. D) the processes involved in the ingestion, digestion, absorption, and use of foods and fluids by the body. A) the amount of energy produced from the burning of food by the body. B) how a serving fits into the daily diet. C) a substance that is ingested, digested, absorbed, and used by the body. D) the processes involved in the ingestion, digestion, absorption, and use of foods and fluids by the body.