Due to the presence of which of the following, human skin get colour?

Options :
  1. rennin
  2. melanin
  3. mesotocin
  4. metatorin

Answer and Explanation :-

Answer: Option 2


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Below me Rontu was running along the cliffs barking at the screaming gulls. Pelicans were chattering as they finished the blue water. But suddenly I thought of Tutok, and the island seemed very quiet.
-Scott O'Dell Island of the Blue Dolphins