The correct answer is: a) Processing fruits & vegetables.
Value addition is the process of increasing the value of a product by adding new features or benefits. In horticulture, value addition can be achieved by processing fruits and vegetables, such as by canning, freezing, or drying them. This can extend the shelf life of the products and make them more convenient for consumers. Value addition can also be achieved by adding value-added services, such as grading, packing, and marketing. This can help to increase the price of the products and make them more competitive in the market.
Option b) Exporting fresh produce is not considered value addition, as it does not involve any changes to the product itself. Option c) Increasing crop yields is also not considered value addition, as it does not increase the value of the product per unit. Option d) Land reclamation is not related to horticulture, as it is the process of converting land that is not suitable for agriculture into land that can be used for agricultural purposes.