<prompt> The following curve is used in evaluation toNon progression of laborFetal distressRh incompatibilityFetal maturity  <response>: Ans. C. Rh incompatibilityThe image shows Lilys curve, which is used to predict the severity of fetal hemolysis.The optical density of liquor containing bilirubin pigment is observed at wavelength 250-700nm. In presence of bilirubin, there is a deviation bulgepeak at 450nm. Bigger the bulge, more is the effect on the fetus. 