**Core Concept**
The scenario describes a case of shoulder dystocia, a complication that can occur during vaginal delivery when the baby's shoulder becomes stuck behind the mother's pubic bone after the head has been delivered. This condition requires immediate intervention to prevent fetal distress and potential birth asphyxia.

**Why the Correct Answer is Right**
The appropriate management of shoulder dystocia involves a series of maneuvers aimed at delivering the baby safely. One of the most commonly employed techniques is the McRoberts maneuver, which involves hyperflexion of the mother's legs tightly to her abdomen. This maneuver helps to widen the pelvis and facilitate delivery of the baby's shoulders. The McRoberts maneuver is often the first line of treatment for shoulder dystocia and can be effective in resolving the impaction in many cases.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not specified, but some common incorrect options might include attempting to deliver the baby's shoulders manually without proper training or using excessive force, which can cause further complications.
**Option B:** Using forceps or vacuum extraction in this scenario is not recommended, as it can exacerbate the situation and increase the risk of injury to the baby or mother.
**Option C:** Administering oxygen to the baby is not directly relevant to the management of shoulder dystocia, although it may be important in general childbirth scenarios.

**Clinical Pearl / High-Yield Fact**
In cases of shoulder dystocia, the McRoberts maneuver should be performed immediately, ideally within 1-2 minutes of the baby's head being delivered, to minimize the risk of birth asphyxia and associated complications.

**Correct Answer:** C. Administer oxygen to the baby.