**Core Concept**
Pediatric airways differ from adult airways due to anatomical and physiological differences. The pediatric airway is characterized by a larger tongue-to-mouth ratio, a shorter and more anterior epiglottis, and a smaller tracheal diameter compared to the adult airway.

**Why the Correct Answer is Right**
The pediatric airway's larger tongue-to-mouth ratio and shorter epiglottis make it more difficult to visualize the glottis during laryngoscopy. Additionally, the smaller tracheal diameter in children requires less pressure to occlude the airway, making them more susceptible to airway obstruction. The pediatric airway's unique anatomy necessitates specialized airway management techniques, such as the use of a gum elastic bougie or a flexible bronchoscope.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the key differences between pediatric and adult airways.
**Option B:** This option is incorrect because it does not address the specific anatomical and physiological differences that make pediatric airway management more challenging.
**Option C:** This option is incorrect because it is too broad and does not specifically address the unique characteristics of the pediatric airway.

**Clinical Pearl / High-Yield Fact**
The pediatric airway's larger tongue-to-mouth ratio and shorter epiglottis make it more difficult to visualize the glottis during laryngoscopy. This is why pediatric airway management often requires a more gentle and patient-centered approach.

**Correct Answer: D. The pediatric airway's smaller tracheal diameter and larger tongue-to-mouth ratio make it more susceptible to airway obstruction.**