**Core Concept**
Meralgia paresthetica is a neurological disorder characterized by numbness, tingling, and burning sensation in the lateral aspect of the thigh, resulting from compression of a specific nerve. This condition is often related to anatomical structures that encircle the femoral nerve.

**Why the Correct Answer is Right**
The femoral nerve is compressed at the level of the inguinal ligament, specifically at the location of the ligament's attachment to the anterior superior iliac spine (ASIS). This compression leads to symptoms such as paresthesia, numbness, and pain in the affected area. The compression can occur due to various factors, including tight clothing, obesity, or anatomical abnormalities.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the lateral femoral cutaneous nerve, not the femoral nerve, is compressed in meralgia paresthetica. The femoral nerve is responsible for motor functions and sensation below the knee.

**Option B:** This option is incorrect because the obturator nerve is responsible for sensation in the medial aspect of the thigh, not the lateral aspect.

**Option C:** This option is incorrect because the sciatic nerve is responsible for sensation in the lower extremities, including the back of the thigh, not the lateral aspect.

**Clinical Pearl / High-Yield Fact**
Meralgia paresthetica is often referred to as Bernhardt-Roth syndrome. The condition is more common in women and can be treated with conservative measures such as physical therapy, orthotics, or in some cases, surgical decompression.

**Correct Answer: A. The lateral femoral cutaneous nerve.**