<prompt> Fetal pulmonary maturity can be evaluated by phospholipid activity in amniotic fluid. In which of the following pregnancies does the fetus have the least chance of developing respiratory distress syndrome RDS?Normal pregnancy; amniotic fluid LS is 1.8:1, phosphatidyl glycerol PG is absentHypeensive pregnancy; amniotic fluid LS is 1.8:1, PG is absentHypeensive pregnancy; amniotic fluid LS is 2:1, PG is absentDiabetic pregnancy; amniotic fluid LS is 2:1, PG is present  <response>: - The presence of phosphatidylglycerol in amniotic fluid reliably indicates lung maturation. This also is the Final indicator of pulmonary maturity. - PG is present only in option 4 thus fetus have the least chance of developing respiratory distress syndrome RDS in option 4 