What step is necessary before joining the glycerol and fatty acid molecules? ?

When necessary, fats can be broken down into molecules similar to ... things in living systems, proteins are built in discrete and often simple steps. ... All amino acids share a base structure: a central carbon, called the alpha ... up to full charge-charge interactions of ionic bonds, or, as mentioned before, covalent bridges.

The answer would be abrasion.

The correct answer is "b"