**Core Concept**
The child's presentation of macroglossia (enlarged tongue), omphalocele (a congenital defect where the intestines or other organs protrude through the navel), and hemihypertrophy (asymmetric growth of one side of the body) suggests a condition related to overgrowth and congenital anomalies. This is a classic triad associated with a genetic disorder affecting growth and development.

**Why the Correct Answer is Right**
The most probable diagnosis is **Beckwith-Wiedemann Syndrome (BWS)**, a genetic disorder that results from an overgrowth of cells and tissues. BWS is characterized by a triad of macroglossia, omphalocele, and hemihypertrophy. The condition is caused by a genetic mutation affecting the imprinted genes on chromosome 11p15.5, leading to overexpression of growth-promoting genes. This results in excessive growth of various tissues, including the tongue, intestines, and limbs.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because **Sotos Syndrome** is a different genetic disorder characterized by excessive growth during childhood, but it does not typically present with the specific triad of macroglossia, omphalocele, and hemihypertrophy seen in BWS.
**Option B:** This option is incorrect because **McCune-Albright Syndrome** is a genetic disorder characterized by polyostotic fibrous dysplasia, café-au-lait spots, and various endocrine disorders, but it does not typically present with the same triad of symptoms as BWS.
**Option C:** This option is incorrect because **Turner Syndrome** is a genetic disorder affecting females, characterized by short stature, webbed neck, and gonadal dysgenesis, but it does not typically present with the symptoms described in the question.
**Option D:** This option is incorrect because **Klinefelter Syndrome** is a genetic disorder affecting males, characterized by tall stature, infertility, and developmental delays, but it does not typically present with the symptoms described in the question.

**Clinical Pearl / High-Yield Fact**
Beckwith-Wiedemann Syndrome is associated with an increased risk of developing Wilms tumor, a type of kidney cancer, and hepatoblastoma, a type of liver cancer. Patients with BWS should undergo regular screening and monitoring for these conditions.

**Correct Answer:** C. Beckwith-Wiedemann Syndrome.