The correct match between item - I and item - II is :

	Item - I		Item - II
(a)	Natural rubber	(I)	1, 3-butadiene + styrene
(b)	Neoprene	(II)	1, 3-butadiene
(c)	Buna-N	(III)	chloroprene
(d)	Buna-S	(IV)	Isoprene

 

• A

  (a)-(III), (b)-(IV), (c)-(I), (d)-(II)
• B

  (a)-(III), (b)-(IV), (c)-(II), (d)-(I)
• Correct answer
  C

  (a)-(IV), (b)-(III), (c)-(II), (d)-(I)
• D

  (a)-(IV), (b)-(III), (c)-(I), (d)-(II)

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