Given their size and complexity, biological molecules such as carbohydrates, proteins, lipids, and nucleic acids can also be referred to as . a. enlarged molecules . b. mancromolecules . c. inorganic molecules

your answer is going to be b. macromolecules.  (you made a spelling error)
Given their size and complexity, biological molecules such as carbohydrates, proteins, lipids, and nucleic acids can also be referred to as macromolecules.
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