**Core Concept**
Laryngomalacia is a congenital condition characterized by the softening of the tissues of the larynx, leading to partial airway obstruction. This condition is most commonly seen in infants and often presents with symptoms such as stridor, feeding difficulties, and apnea.

**Why the Correct Answer is Right**
Reassurance is the most common mode of treatment for laryngomalacia, as most cases are mild and resolve on their own by the age of 12-18 months. The primary approach involves monitoring the infant's symptoms and growth, with reassurance provided to the parents. This conservative approach is often sufficient, as the condition tends to improve spontaneously with age. In some cases, positional therapy, where the infant is placed in a prone position, may be recommended to help alleviate symptoms.

**Why Each Wrong Option is Incorrect**
**Option B:** Medical treatment is not the primary approach for laryngomalacia, as there is limited evidence supporting the effectiveness of medications such as bronchodilators or corticosteroids in managing symptoms.

**Option C:** Surgery is not typically required for laryngomalacia, as most cases can be managed conservatively. However, in severe cases where symptoms persist, surgical interventions such as supraglottoplasty may be considered.

**Option D:** Wait and watch is not an accurate description of the recommended approach for laryngomalacia. While it is true that some cases will resolve on their own, a more proactive approach involving monitoring and reassurance is typically recommended.

**Clinical Pearl / High-Yield Fact**
It's essential to note that laryngomalacia is often associated with other congenital anomalies, such as cardiac defects or gastrointestinal issues. A thorough evaluation and monitoring are crucial to identify any potential co-existing conditions.

**✓ Correct Answer: A. Reassurance**