The phenomenon of 'Test Tube Baby' is correctly explained in which of the following explanations?

Options :
  1. When every process of embryo formation is in the test tube.
  2. When the embryo develops in a test tube.
  3. When the fertilisation is external and development is internal.
  4. When the fertilisation is internal and development is external.
Answer and Explanation :-

Answer: Option 3


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The paths to liberation are numerous, but the bank along the way is always the same, the Bank of Karma, where the liberation account of each of us is credited or debited depending on our actions.
-Yann Martel Life of Pi