Answer is : (c) a Chinese horse
In evolutionary terms, an Indian school boy is more closely related to Chinese horse. Human and horse irrespective of their country are more generally similar in their chromosomal management, than to rest of the species mentioned here. This is because human and horse both belong to class Mammalia. Other options like frog, snake and shark belong to class– Amphibia, Reptilia and Chondrichthyes.
