Viviparity is considered to be more evolved because

Options

A. the young ones are left on their own
B. the young ones are protected by a thick shell
C. the young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival
D. the embryo takes a long time to develop

Answer

**Step-by-Step Solution:**

1. **Understanding Viviparity**:
- Viviparity refers to a mode of reproduction in which the young develop inside the mother's body and are born live, as opposed to laying eggs (oviparity).
- This process allows the embryo to receive nutrients and oxygen directly from the mother through the placenta.

2. **Protection of Offspring**:
- One of the key advantages of viviparity is that the developing young are protected within the mother's body. This protection helps shield them from environmental hazards and predators.

3. **Nourishment**:
- The embryo receives nourishment directly from the mother, which enhances its chances of survival compared to organisms that lay eggs, where the young are more vulnerable after hatching.

4. **Increased Survival Rates**:
- Because the young are born live and have been nurtured in a safe environment, they typically have a higher survival rate. This is a significant evolutionary advantage.

5. **Development Time**:
- While it is true that the embryo takes a longer time to develop in viviparous organisms, this extended period allows for more complex development and better preparation for life outside the womb.

6. **Conclusion**:
- Therefore, viviparity is considered more evolved because it allows for greater protection and nourishment of the young, leading to higher survival rates after birth.

**Final Answer**: Viviparity is considered more evolved because the young are protected inside the mother's body, leading to a higher chance of survival.

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