**Core Concept**
Neonatal respiratory distress syndrome (NRDS) is a condition that affects newborns, particularly those born prematurely, due to the immaturity of their lungs. It is characterized by the inability to initiate and maintain spontaneous breathing efforts, leading to respiratory failure.

**Why the Correct Answer is Right**
The pathophysiology of NRDS is primarily related to the deficiency of surfactant in the alveoli of the lungs. Surfactant is a complex mixture of phospholipids and proteins that reduces surface tension within the alveoli, allowing for easier lung expansion and gas exchange. Premature infants often have insufficient surfactant production, leading to increased surface tension and subsequent collapse of the alveoli. This collapse results in the inability to initiate and maintain spontaneous breathing efforts. The diagnosis of NRDS is often made based on clinical presentation, radiographic findings, and the need for mechanical ventilation.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because bronchopulmonary dysplasia (BPD) is a chronic lung disease that affects premature infants, but it is not characterized by failure to initiate and maintain spontaneous respiration following birth.
**Option B:** This option is incorrect because congenital diaphragmatic hernia (CDH) is a congenital anomaly that affects the diaphragm, but it is not directly related to the inability to initiate and maintain spontaneous respiration following birth.
**Option C:** This option is incorrect because group B streptococcal infection is a bacterial infection that can affect newborns, but it is not directly related to the inability to initiate and maintain spontaneous respiration following birth.

**Clinical Pearl / High-Yield Fact**
Newborns with respiratory distress syndrome often require oxygen therapy and mechanical ventilation to support their respiratory efforts. Surfactant replacement therapy is a common treatment approach to improve lung compliance and gas exchange.

**Correct Answer:** D. Neonatal respiratory distress syndrome (NRDS)