Viviparity is considered to be more evolved because

The young ones are left on their own

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The young ones are protected by a thick shell

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The young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival

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The embryo takes a long time to develop

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Solution

The correct option is C The young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival
As the young progenies are protected inside the body of the mother as well as they are looked after they are born, leads to more chances of survival, viviparity is considered to be more evolved.
So, the correct option is 'The young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival'

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Similar questions

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	Oviparous		Viviparous
1.	They lay eggs.	1	Give birth to young ones directly.
2.	Chances of survival of young ones are less.	2	Chances of survival of young ones are more.
3.	E.g. Whale and dolphins	3	E.g. Birds and frog

The animals which give birth to young ones are called viviparous.

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