Correct option is (b) Sodium chloride
To elaborate: The coating materials generally used for coating are:
▪ Ethyl cellulose
▪ Polyvinyl alcohol
▪ Gelatin
▪ Sodium alginate
The definition has been expanded, and includes most foods, where the encapsulation of flavors is the most common. The technique of microencapsulation depends on the physical and chemical properties of the material to be encapsulated.