Can anyone me with this biology question? living systems are made of complex molecules including carbohydrates, fats, proteins, and nucleic acids. even though there are more than 100 elements known to exist, these molecules are comprised of only a few elements. what are these elements? *a. sodium, potassium, calcium, nitrogen, phosphorus, sulfurb. carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorusc. carbon, hydrogen, oxygen, fluorine, chlorine, iodined. fluorine, chlorine, iodine, nitrogen, phosphorus, sulfur