Which best describes the main role of digestion in the human body? to build large molecules to power other cell processes to release energy to absorb food molecules

 to absorb food molecules

Explanation: Digestion is the process of changing the food that has been consumed into energy through absorption.The processing of food molecule that are huge and insoluble are splitted into the water-soluble smaller molecules and gets absorbed in blood plasma that are watery in nature.

Other options are incorrect because they don't generate large molecules, do not eliminate energy rather generate it and do not provide nutrients to other cells .

Thus, the correct answer is food molecules getting absorbed.

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