A sample of small soluble organic molecules was analyzed and found to contain the elements carbon, oxygen, hydrogen, and nitrogen. These molecules were most likely A) Carbohydrates B) Lipids C) Nucleic acids D) Proteins

Protein

Explanation:

Protein are organic molecules that contain carbon, oxygen, nitrogen and hydrogen. They are one of the major constituents of living matter which contain long chains of amino acids that are linked together by polypeptides bonds. The protein has a monomer that are amino acids which are contain carbon central atom and carboxyl ground which contain hydrogen and oxygen.