Match the animal with the mode of feeding.

(a) Housefly	(i) Biting and chewing
(b) Humming bird	(ii) Sucking
(c) Cockroach	(iii) Sponging
(d) Infants	(iv) Suckling

The correct option is (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv).

Let us analyze the mode of feeding for each animal listed in the question:

(a) Housefly: Houseflies liquefy solid food by secreting saliva over it and then absorb the liquid using their specialized mouthparts. This mode of feeding is known as sponging. Therefore, (a) matches with (iii).

(b) Humming bird: Hummingbirds feed mainly on flower nectar by drawing it up using their long, straw-like beak and tongue. This mode of feeding is called sucking. Therefore, (b) matches with (ii).

(c) Cockroach: Cockroaches possess strong mandibles that help them cut and grind their food. Their mode of feeding is biting and chewing. Therefore, (c) matches with (i).

(d) Infants: Human infants feed by drawing milk from the mother's breast, which is referred to as suckling. Therefore, (d) matches with (iv).

Combining all the correct pairs gives:

(a) - (iii)
(b) - (ii)
(c) - (i)
(d) - (iv)