Directions: In the question, there are four sentences. Each sentence has a pair of words/phrases marked as ‘A’ and ‘B’ that are highlighted. Select the most appropriate word or phrase to form grammatically and syntactically correct sentences. Then, from the options that follow, choose the correct one.

(i) He ate lots of onions, but he did not fall ill, so that (A) disproves (B) disapproves his theory that it was onions which made him sick. (ii) The birth of the (A) male (B) mail child in the family sent all the members of the family into raptures. (iii) The child could not untie the (A) not (B) knot of the laces of his shoes. So, he called on his mother. (iv) The mother was sitting (A) beside (B) besides her niece.