Which among the given correctly explains the phenomenon of 'Test Tube Baby' -

[ A ]    When the fertilisation is internal & development is external.
[ B ]    When the fertilisation is external & development is internal. right
[ C ]    When every process of embryo formation is in the test tube.
[ D ]    When the embryo develops in a test tube.
Answer : Option B
Explanation :
When the fertilisation is external & development is internal.. In vitro fertilization (IVF) is a process by which an egg is fertilized by sperm outside the body: in vitro. Test tube baby is born from in vitro fertilization. When a woman's natural cycle is monitored to collect a naturally selected ovum (egg) for fertilization, it is known as natural cycle IVF. The fertilized egg (zygote) is then transferred to the patient's uterus with the intention of establishing a successful pregnancy.

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