'Cow' is related to 'Animal' in the same way as 'Sparrow' is related to '_________'.

Explanation:

A cow is a type of animal, and a sparrow is a type of bird.

Option (a): Insect: Incorrect, as a sparrow is a bird, not an insect.

Option (b): Bird: Correct, a sparrow is a type of bird.

Option (c): Flower: Incorrect, as sparrow is not related to a flower.

Option (d): Food: Incorrect, sparrow is a bird, not food.

Thus, the correct answer is (b) Bird.​