Most modern breeds of domestic Dog have evolved through

Options :
  1. sexual selection
  2. artificial selection
  3. natural selection
  4. isolation
Answer and Explanation :-

Answer: Option 2

Explanation:

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For years to come the debris of a convulsed world will beset our steps. It will require a purpose stronger than any man and worthy of all men to calm and inspirit us. A sane society whose riches are happy children, men and women, beautiful with peace and creative activity, is not going to be ordained for us. We must make it ourselves.
-Helen Keller The Open Door