Which of the following is a notable red wine producer from Ontario?

Château des Charmes is recognized as a notable red wine producer from Ontario, particularly known for its high-quality wines that showcase the region's terroir. Based in the Niagara Peninsula, this winery was founded by the renowned winemaker Paul Bosc, who has played a significant role in establishing Ontario's wine reputation. The winery has been successful in producing a range of varietals including Pinot Noir and Cabernet Franc, which are well-suited to the climate and soils of the area.

While other producers like Laughing Stock, Benjamin Bridge, and Sperling are also respected within the wine industry, they have gained more recognition for either their white wines or sparkling wines. For instance, Benjamin Bridge is best known for its sparkling wines, while Sperling focuses on sustainable viticulture and is primarily recognized for its whites. Thus, Château des Charmes stands out as the most prominent producer of red wines within the context of Ontario's wine landscape, making it the best choice among the options provided.