Which one is irrelevant to evolution of man?

Options

A. Perfection of hard for tool making
B. Changer of diet form hard nuts/roots to soft food
C. Increased ability to communication or develop community behaviour
D. Loss of tail

Answer

D

Explanation

Evolution simply means an orderly change from one condition to another It is often called descent with modification. Tail provides an evidence of atavism or reversion, i.e. reappearance of certain ancestral characters which had disappeared or were reduced. Tail is absent in man, but occasionally early embryo of man possesses an external tail (vestigial tail vertebrae) In adults the tail is represented by a string of caudal vertebrae, which constitute the coccyx (tail bone).