Biology

The correct answer is: D.glycerol and fatty acids.

Here's why:

1.Lipids are a diverse group of molecules, and while they don't have a single universal monomer like proteins (which are made of amino acids) or carbohydrates (which are made of monosaccharides), the building blocks of many lipids are glycerol and fatty acids.

2.Fatty acids are long chains of hydrocarbons with a carboxyl group at one end. They are key components of fats, oils, and phospholipids.

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