Which region in Chile is known for a division of the Rapel area into two subzones?

The Central Valley is the correct choice as it is known for encompassing the Rapel area, which is divided into two notable subzones: Cachapoal Valley and Colchagua Valley. This division is significant for wine production as each subzone has its own distinct terroir, microclimates, and soil types, which contribute to the diversity of wine styles produced in the region.

The Central Valley is a major wine-producing region in Chile and plays a crucial role in the country's overall wine industry. It benefits from a range of climatic influences and geographical features that allow for a variety of grape varieties to thrive, making it an integral part of the Chilean wine narrative.

While the Maipo region is also a significant wine area known for its distinguished Cabernet Sauvignon and has historical importance in Chilean viticulture, it is a separate entity and does not encompass the division of the Rapel area. The Aconcagua region, located to the north, produces notable wines but does not feature this specific subzone division either. Similarly, the Coquimbo region is acknowledged for its own wine production but does not include the two subzones of the Rapel area.