The monomers of terylene are

• A

  phenol and formaldehyde
• B

  ethylene glycol and phthalic acid
• C

  adipic acid and hexamethylenediamine
• Correct answer
  D

  ethylene glycol and terephthalic acid

Solution

Terylene it is a polymer of ethylene glycol (ethane-1,2-diol) and terephthalic acid (benzene-1,4-dicarboxylic acid).

Hence, the correct answer is option: 'D'.