Bakelite is a polymer which is used in the manufacturing

Solution

A polymer is formed from monomer units. Bakelite is a polymer formed from phenol and formaldehyde (which are monomers). Bakelite is an early plastic. It is a thermosetting polymer (thermosetting plastics remain in a permanent solid state once hardened) formed from condensation of phenol and formaldehyde. Neoprene is the polymer of chloroprene. Polyethylene terephthalate is the polymer of ethylene glycol and terephtalic acid. Buna –S is the polymer of 1, 3 buta diene ad styrene. Hence, option A is correct.