An Indian class X student is evolutionary most related to
A. A Chinese snake
B. An African buffalo
C. Ab Indian frog
D. An Australian pigeon

Hint: A snake belongs to reptiles, buffalo belongs to mammals, a frog belongs to amphibians, and a pigeon belongs to bird species.

Complete answer:
Evolution reflects changes over the coming generations in the heritage features in biological populations. These are the expressions of the genes which are transmitted during replication from parent to descendant. There are many features of genetic recombination, mutation, and other causes of genetic variation within a given population. Evolution takes place as evolutionary mechanisms like natural and genetic mutation operate upon this variation, which contribute to certain features being more common or scarce in a population. Evolution by natural selection is a hypothesis supported by evidence in a broad range of scientific fields, including geology, paleontology, genetics and developmental biology, which have been better supported in the history of science. Natural selection ensures that species that have a beneficial variety will survive, so they adapt to changes in their environment while unsuitable species are lost or killed in nature (which do not adapt to the environment).

An African buffalo and a student of class X belong to mammal species. Both have some similarities according to evolution. Both have mammary glands which are the most specific characteristics of mammals. All female mammals can produce milk from the mammary glands. All mammals have three middle ear bones, hair on their skin, sweat glands, and the ability to control body temperature. Therefore, we can say that an Indian class X student is evolutionary most related to an African buffalo.

Thus, the correct answer is option B. i.e., An African buffalo.

Note:Evolution takes place as evolutionary mechanisms like natural and genetic mutation operate upon this variation, which contribute to certain features being more common or scarce in a population.