The correct answer is option 4 - Stigma. The stigma is a part of the flower, specifically the female reproductive organ, where the saffron spice comes from. Saffron is derived from the dried stigmas of the Crocus Sativus flower. The stigma is the part of the flower that receives the pollen and plays a crucial role in the pollination process. It is harvested by carefully plucking the red threads or stigmas from the flower. These stigmas are then dried and used as saffron, which is known for its unique flavor, fragrance, and vibrant color. Saffron is one of the most expensive spices in the world due to the labor-intensive process of harvesting and its limited availability.