Wax coating treatments enhances the shelf life of fruits because it blocks

Answer: Option A

Wax coating treatments enhance the shelf life of fruits because it blocks Transpiration.
Transpiration is the loss of water from fruits and vegetables and includes the transport of moisture through the skin of the commodity, the evaporation of this moisture from the commodity surface and the convective mass transport of the moisture to the surroundings.
Fruit waxing is the process of covering fruits with artificial waxing material. The primary reasons for waxing are to prevent water loss and thus retard shrinkage and spoilage, and to improve appearance. Eg: apples.