Which of the following is a key producer from Chianti?

Marchesi Antinori is recognized as a key producer from the Chianti region. This estate has a long history dating back to the 14th century and is celebrated for its influence and contributions to the development of Chianti wines, particularly through its innovative approaches to winemaking. The estate is well-regarded for producing high-quality Chianti Classico, and it plays a significant role in setting standards for the region. Characteristics that define their wines include a focus on terroir expression and careful vineyard management.

In contrast, Tenuta di Renieri, while a producer in the region, does not have the same level of recognition or historical significance as Marchesi Antinori. Although Brancaia and Ruffino are also noted producers of Chianti wines, Antinori stands out as one of the most prominent and influential figures in Chianti's winemaking history. This context highlights why Marchesi Antinori is often cited as a key producer in Chianti, showcasing the significance of legacy and impact within the wine industry.