D. It needs to be broken down into simple sugars.
Carbohydrates are large molecules that cannot be directly absorbed by the body. Before they can be absorbed, they need to be broken down into their simplest form, which is glucose. This process starts in the mouth with the enzyme amylase, which breaks down starches into smaller sugars. Further breakdown occurs in the small intestine with the help of pancreatic amylase and other enzymes, which break down the remaining complex carbohydrates into simple sugars such as glucose, fructose, and galactose. These simple sugars are then absorbed through the lining of the small intestine and transported to the liver, where they are converted into glucose and distributed to the body's cells for energy..