<prompt> P : 0 ratio for FAD is -32.51.54  <response>: Ans. is c i.e.,1.5The P : 0 ratio is a measure of the number of high energy phosphates i.e., number of ATP molecules synthesized per atom of oxygen consumed or per molecule of water is produced.The P : 0 ratio for oxidation of metabolites that yield NADH is 2.5 and the ratio for those that yield FADH2 is 1.5. 