The correct answer is A. isoprene.
Natural rubber is a polymer of isoprene, a five-carbon hydrocarbon. It is produced by the rubber tree, Hevea brasiliensis. The rubber tree is a tropical plant that is native to the Amazon rainforest. The rubber is extracted from the tree’s sap, which is a milky white liquid. The sap is collected and then processed to remove impurities. The resulting rubber is a white, rubbery material.
Natural rubber is a versatile material that has many uses. It is used to make tires, shoes, gloves, and other products. Natural rubber is also used in the manufacture of latex paints and adhesives.
Styrene is a hydrocarbon that is used to make polystyrene, a type of plastic. Butadiene is a hydrocarbon that is used to make synthetic rubber. Ethylene is a hydrocarbon that is used to make polyethylene, a type of plastic.
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