Ans is c, i.e. Zavanelli maneuverRef Williams, 24/e, p 567The last rescue for entrapped fetal head in term fetus is replacement of the fetus higher into the vagina and uterus followed by cesarean delivery. This is called as Zavanelli maneuver.In preterm babies, last resort for entrapment of after-coming head of breech is-to give Duhrssen Incisions.