According to IUCN, some of the extinctions include
(i) Dodo
(ii) Indian gazelle
(iii) Thylacine
(iv) Steller's sea cow
(a) (i), (ii), (iii) and (iv)
(b) (ii) and (iv)
(c) (i),(iii) and (iv)
(d) (iii) and (iv)

Options

A. (i), (ii), (iii) and (iv)
B. (ii) and (iv)
C. (i),(iii) and (iv)
D. (iii) and (iv)

Answer

To solve the question regarding the extinctions according to the IUCN, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Species Listed**: The question lists four species:
- (i) Dodo
- (ii) Indian gazelle
- (iii) Thylacine
- (iv) Steller's sea cow

2. **Research Extinction Status**: We need to determine which of these species are indeed extinct according to the IUCN Red List:
- **Dodo**: Extinct (last seen in the late 17th century).
- **Indian Gazelle**: Not extinct; it is still found in the wild.
- **Thylacine**: Extinct (last known individual died in captivity in 1936).
- **Steller's Sea Cow**: Extinct (hunted to extinction by the 18th century).

3. **Compile the Extinct Species**: From our research, we find that the extinct species are:
- Dodo (i)
- Thylacine (iii)
- Steller's Sea Cow (iv)

4. **Evaluate the Options**: Now we can evaluate the options provided in the question:
- (a) (i), (ii), (iii) and (iv) - Incorrect (Indian gazelle is not extinct)
- (b) (ii) and (iv) - Incorrect (Indian gazelle is not extinct)
- (c) (i), (iii) and (iv) - Correct (Dodo, Thylacine, and Steller's Sea Cow are extinct)
- (d) (iii) and (iv) - Incorrect (Dodo is also extinct)

5. **Conclusion**: The correct answer is option (c) (i), (iii), and (iv).

### Final Answer:
(c) (i), (iii) and (iv)

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