**Core Concept:**
After the division of testicular vein, the venous drainage of testes is affected, as the testicular veins are the primary drainage veins for testicular blood. The testicular veins are the tributaries of the pampiniform plexus, and they drain into the internal iliac veins. The testicular veins are essential for maintaining testicular function and fertility, as they carry testicular venous blood back to the heart.

**Why the Correct Answer is Right:**
The correct answer, option **D**, refers to the alternative venous drainage pathway after the division of testicular veins. In such cases, the blood from the testes flows into the pampiniform plexus, which is a network of small veins surrounding the spermatic cord. This plexus drains into the internal iliac veins and ultimately into the inferior vena cava. This ensures that the testicular venous blood is still transported back to the heart, maintaining testicular function and fertility.

**Why Each Wrong Option is Incorrect:**

A. **Option A**: Testicular artery is an incorrect answer as arteries carry arterial blood, not venous blood. After the division of testicular veins, the venous drainage is affected, not the arterial supply.

B. **Option B**: The spermatic artery is the primary arterial supply to the testes, not the main venous drainage pathway. The division of testicular veins affects the venous drainage, not the arterial supply.

C. **Option C**: This option refers to the lymphatic drainage of the testis, which is distinct from venous drainage. Division of testicular veins impacts venous drainage, not lymphatic drainage.

**Clinical Pearl:**
In clinical scenarios, understanding the venous drainage of the testes is crucial for making informed decisions regarding surgical procedures, such as the treatment of varicoceles. Knowledge of alternative drainage pathways and collateral circulation helps avoid potential complications like testicular atrophy and impaired fertility.