Choice A reason: Administering an IV fluid bolus may be helpful in preventing hypotension or maintaining hydration, but it is not the most critical action before oxytocin induction. Oxytocin can cause uterine tachysystole and fetal distress, so fluid bolus alone does not address the primary risk. Choice B reason: Inserting a urinary catheter can help monitor urine output and bladder distension, but it is not essential before starting oxytocin. Catheterization is more relevant in surgical or anesthesia contexts rather than induction safety. Choice C reason: Performing glucose monitoring is important in diabetic clients, but it is not universally required before oxytocin induction. Oxytocin does not directly alter glucose metabolism, so this is not the priority action. Choice D reason: Continuous electronic fetal monitoring is the most important action because oxytocin increases uterine contractions, which can reduce placental perfusion and oxygen delivery to the fetus. A client with a prior cesarean is at higher risk for uterine rupture, so monitoring ensures early detection of fetal distress or abnormal contraction patterns.