Name an alkylbenzene widely used as a chemical intermediate in the production of phenol.

Correct option is A

The alkylbenzene widely used as a chemical intermediate in the production of phenol is Cumene. Cumene is an organic compound with the chemical formula C9H12. It is primarily used as a solvent and a starting material in the production of phenol and its derivatives. The cumene process is a major industrial method for the production of phenol, where cumene is oxidized to produce cumene hydroperoxide, which is then further processed to obtain phenol and acetone.
 Furan is a heterocyclic compound with a five-membered ring containing four carbon atoms and one oxygen atom. Furan has various applications in organic synthesis, pharmaceuticals, and as a starting material for the synthesis of other chemicals.
 Styrene is an organic compound with the chemical formula C8H8. It is an aromatic hydrocarbon and is commonly used in the production of plastics, resins, and synthetic rubbers.
 Toluene is an organic compound with the chemical formula C7H8. It is an aromatic hydrocarbon and is commonly used as a solvent and fuel additive. It can be used as a starting material in the production of phenol through a process called toluene hydrodealkylation. In this process, toluene is subjected to catalytic hydrogenation to produce benzene and methane, and benzene is then further processed to obtain phenol.