Correct Answer: C

Rationale: Vernix caseosa is a white, cheesy substance that acts as a protective barrier on the skin of newborns, particularly present in skin folds. It helps to prevent dehydration and protect the delicate skin of the newborn from the amniotic fluid in utero. Educating expectant parents about the presence and function of vernix caseosa can help them understand the importance of its preservation during the immediate postnatal period.

Correct Answer: A

Rationale: Assessing the bilirubin level helps determine the severity of jaundice in the newborn.

Correct Answer: C

Rationale: Numbness and inability to move fingers are concerning findings that suggest potential nerve damage or compartment syndrome due to increased pressure within the cast. This requires immediate notification of the healthcare provider to prevent further complications or permanent damage.

Correct Answer: B

Rationale: The diaphragm should be refitted after childbirth to ensure proper fit and effectiveness, as changes in the body may affect its function.

Correct Answer: C

Rationale: Obtaining the date of the last normal menstrual period is crucial in estimating the gestational age of the fetus. This information helps in determining the progression of labor and the management of delivery. It also assists healthcare providers in assessing the overall health of the mother and the fetus.