Final answer:
Venous drainage from the left ovary follows the path of the ovarian vein to the left renal vein and then to the inferior vena cava.
Step-by-step explanation:
The correct path of venous drainage from the left ovary is through the ovarian vein, which then leads to the left renal vein, and subsequently into the inferior vena cava (IVC). This blood flow process is significant as it pertains to the circulation within the female reproductive system.
The right ovarian vein, by contrast, drains directly into the inferior vena cava. It is important to note that the hepatic portal system is unrelated to the venous drainage of the ovaries, as it is primarily involved with blood flow from the digestive organs to the liver for processing.