What best describes main component of carbohydrates

All carbohydrates, including sugar, therefore contain the same three elements: carbon, hydrogen, and oxygen. Different arrangements of these elements form single units to make different types of carbohydrates.

i can't see the full page, therefore, can't answer it

explanation:

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.