(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
Correct option is C. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
In lac operon
i gene - Repressor
z gene - β-galactosidase
y gene - Permease
a gene - Transacetylase.
So, the correct answer is '(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)'