**Core Concept**
Orchidopexy is a surgical procedure performed to relocate an undescended testis to its normal anatomical position in the scrotum. This procedure aims to improve fertility, reduce the risk of testicular cancer, and alleviate psychological distress associated with undescended testes.

**Why the Correct Answer is Right**
The ideal age for orchidopexy is between 6 to 12 months, as it allows for optimal testicular growth and development. Early intervention also helps prevent potential complications such as testicular torsion and increased risk of testicular cancer. The procedure involves mobilizing the testis and bringing it down to the scrotum, often requiring a small incision in the groin.

**Why Each Wrong Option is Incorrect**
**Option A:** Although some surgeons may consider orchidopexy in premature infants, 6 months is generally considered the minimum age for optimal results.
**Option B:** This option is not a recognized age for orchidopexy.
**Option C:** This option is also not a recognized age for orchidopexy.

**Clinical Pearl / High-Yield Fact**
It is essential to note that undescended testes are often associated with other congenital anomalies, such as inguinal hernias, and may require further evaluation and management.

**Correct Answer:** C. 6-12 months