Choice A rationale Assisting the client into a knee-chest position, or Trendelenburg, is the priority to alleviate pressure on the prolapsed umbilical cord. This position uses gravity to shift the fetal presenting part off the cord, preventing further compression and preserving umbilical blood flow. Maintaining adequate blood flow is crucial to prevent fetal hypoxia and bradycardia, which can quickly lead to fetal compromise and potential death if uncorrected. Choice B rationale Administering oxygen via face mask is a supportive measure for potential fetal hypoxia, but it is secondary to relieving cord compression. While oxygen can improve maternal oxygen saturation and fetal oxygenation, it will not resolve the underlying issue of cord compression. Addressing the mechanical compression of the cord must be the immediate priority to restore adequate blood flow. Choice C rationale Applying an external fetal monitor is important for assessing fetal well-being after a cord prolapse. However, it is not the first action. The immediate priority is to relieve pressure on the cord to prevent further fetal compromise. Fetal monitoring provides diagnostic information but does not directly intervene to alleviate the life-threatening compression. Choice D rationale Loosely wrapping the cord with a saline-saturated towel is an important step to prevent drying and maintain viability of the exposed cord, but it is not the immediate priority. The primary goal is to relieve pressure on the cord to ensure blood flow to the fetus. Protecting the cord from drying is a subsequent action after addressing the compression.