Right option is (d) All of the mentioned
To explain: The products obtained as a result of alkylation shows that this unit process is used in the making of anesthetics, antipyretics, alkaloids, antiseptics, detergents, dyes, explosives, flavour’s, hypnotics, intermediates, lubricants, medicinal, perfumes, photographic chemicals, plasticizers, plastics, resins, synthetic rubber, rubber chemicals (accelerators, antioxidants, modifiers, stabilizers), solvents, soporifics, synthetic gasoline, etc.