What process is used to enhance the yield and quality of lettuce?

The correct process for enhancing the yield and quality of lettuce is hydration. Hydration involves providing the necessary moisture to maintain the freshness and crispness of the lettuce leaves. This process helps to replenish any water lost during handling, storage, or transport, which can compromise the quality of the produce. Proper hydration also helps in preventing wilting and maintaining the nutritional quality of the lettuce.

Washing, while important for removing dirt and pesticides, does not specifically enhance yield or effectively improve the internal quality of the lettuce. Slicing is important for preparation and presentation but does not contribute to the enhancement of yield or quality; in fact, it can lead to quicker spoilage. Freezing may be used for preservation but does not enhance the yield or quality of fresh lettuce as freezing can change its texture and flavor, making it less desirable for consumption.