In Australia, over 90% of wines are produced from which zone?

The correct answer is South-Eastern Australia, which encompasses a significant portion of the country's wine-producing regions, including areas in Victoria, New South Wales, and South Australia. This particular zone is known for its diverse climates and growing conditions that allow for a wide range of grape varieties to thrive, making it the largest wine-producing area in Australia.

South-Eastern Australia serves as a key contributor to the national wine output, accounting for over 90% of the wine production in the country. This zone benefits from the merging of different regional styles and varietals, resulting in a notable variety of wines that are distributed both domestically and internationally.

Other regions such as Western Australia, South Australia, and Victoria produce high-quality wines but do not collectively contribute as much to the overall wine production of Australia as South-Eastern Australia does. Each of these regions has its own distinctive wine style and notable vineyards, but their production levels are smaller compared to those from South-Eastern Australia.