Final answer:
Marlborough in New Zealand is the most important growing region for Sauvignon Blanc.
Step-by-step explanation:
The most important growing region for Sauvignon Blanc is Marlborough, which is located in New Zealand. Marlborough is known for producing high-quality Sauvignon Blanc wines with distinctive flavors and aromas.
The region has a cool climate, well-drained soils, and a long growing season, which are favorable conditions for the cultivation of Sauvignon Blanc grapes.