What role does ethylene play in fruit ripening?

Ethylene is a vital plant hormone that plays a crucial role in the ripening of fruits. As fruits mature, ethylene is produced, which initiates a series of physiological and biochemical changes. These changes include the breakdown of cell wall components, leading to fruit softening, as well as the development of desirable flavors and aromas. The production of ethylene not only affects texture but also enhances the overall sensory qualities of the fruit, making it more appealing for consumption.

The significance of ethylene in promoting these changes is well-documented, as it acts as a signaling molecule to trigger other hormones and enzymes involved in the ripening process. This is why the response pinpointing ethylene's role in leading to fruit softening and enhanced aroma is accurate. The other choices describe processes that are either unrelated to the ripening process or do not accurately reflect the actions of ethylene on fruits.