**Core Concept**
Pierre Robin's Sequence is a congenital condition characterized by micrognathia (small lower jaw), glossoptosis (posterior displacement of the tongue), and upper airway obstruction. This condition often results from a genetic mutation that affects the development of the mandible.

**Why the Correct Answer is Right**
The key features of Pierre Robin's Sequence include micrognathia, glossoptosis, and upper airway obstruction. These symptoms arise due to the inadequate development of the mandible, which leads to the posterior displacement of the tongue and subsequent obstruction of the upper airway. The clinical presentation of Pierre Robin's Sequence is often associated with feeding difficulties, respiratory distress, and failure to thrive.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as Pierre Robin's Sequence does not typically include cleft palate, although it may be associated with other congenital anomalies.
* **Option B:** This option is incorrect as Pierre Robin's Sequence does not typically include polydactyly, which is a congenital anomaly characterized by extra fingers or toes.
* **Option C:** This option is incorrect as Pierre Robin's Sequence does not typically include hypospadias, which is a congenital anomaly characterized by the urethral opening being located on the underside of the penis.

**Clinical Pearl / High-Yield Fact**
Pierre Robin's Sequence is a condition that requires prompt recognition and management to prevent respiratory complications and ensure proper growth and development.

**Correct Answer: A.**