$Homo$ $sapiens$ originated how many years ago?

Match the following:-
$(a)$ Australopithecus $(i)$ First human-like
$(b)$ Homo habilis $(ii)$ Used hides to protect their body
$(c)$ Homo erectus $(iii)$ Started in Africa
$(d)$ Neanderthal man $(iv)$ Probably ate meat
$(e)$ Homo sapiens $(v)$ Hunted with stone weapons and ate fruit

The recent ancestors of modern man were

Primates which existed about $15$ million years ago were:
$(I)$ Dryopithecus
$(II)$ Homo habilis
$(III)$ Ramapithecus
$(IV)$ Australopithecus
$(V)$ Homo erectus
$(VI)$ Neanderthal man
Choose the correct option.

Which is the earliest fossil in the evolutionary history of the horse?

Currently,the mitochondrial $DNA$ $(mt-DNA)$ sequence and the $Y$-chromosome are considered for the study of human evolution because ........