The correct answer is option 2: Malabar coast. The Malabar coast is known for being the main spice producer. The Malabar coast is a coastal region in southwestern India, specifically the state of Kerala. This region has a tropical climate and fertile soil, making it ideal for growing a variety of spices. Spices such as pepper, cardamom, cinnamon, and cloves have been cultivated and traded from the Malabar coast for centuries. The region`s proximity to the Arabian Sea also played a significant role in facilitating spice trade and establishing connections with foreign merchants. Overall, the Malabar coast has a rich history as a major center for spice production and trade.