Read the following sentence and identify the set of words which would correctly fill the blanks in the given order.
The process of ________(i) in frogs is controlled by the hormone _______(ii) whose production requires the presence of ________ (iii) in water.
1
(i) fertilisation (ii) adrenalin (iii) oxygen
2
(i) fertilisation (ii) insulin (iii) chlorine
3
(i) metamorphosis (ii) thyroxine (iii) iodine
4
(i) metamorphosis (ii) adrenalin (iii) nitrogen