The correct answer is: B. ethylene
Ethylene is a colorless, flammable gas that is the simplest alkene. It is the monomer of polyethylene, which is a type of plastic. Ethylene is produced by cracking petroleum, and it is used in a variety of industrial processes, including the production of plastics, synthetic fibers, and gasoline.
Vinyl chloride is a colorless, flammable liquid that is the monomer of polyvinyl chloride (PVC), which is a type of plastic. Vinyl chloride is produced by the chlorination of ethylene, and it is used in a variety of industrial processes, including the production of plastics, synthetic fibers, and adhesives.
Ethyl alcohol is a colorless, flammable liquid that is the primary alcohol found in alcoholic beverages. It is also used as a solvent, a fuel, and a chemical intermediate. Ethyl alcohol is produced by the fermentation of sugars, and it can also be synthesized from ethylene.
None of the above is the monomer of polythene.