Which type of rum is described as having medium or pronounced flavor with grassy ripe fruity notes?

The correct description of rum with medium or pronounced flavor that includes grassy and ripe fruity notes best matches golden rum. Golden rum is typically aged in barrels, which allows it to develop more complex flavors beyond what is found in lighter rums. This aging process contributes to the maturity of the flavor profile, which often exhibits characteristics such as fruitiness and herbaceous qualities.

In contrast, dark rums generally have richer, deeper flavors with notes of toffee, molasses, or caramel due to a longer aging process and sometimes increased sugar content. White rums are typically light and clean in flavor, often featuring more neutral or subtle notes since they are usually unaged or aged for a short time and then filtered to remove color. Spiced rum is infused with various spices and often results in flavor profiles dominated by the spices rather than the natural characteristics of the rum itself. Therefore, golden rum is the best choice for this particular flavor description.