A critically endangered animal is
(a) Passenger pigeon
(b) Dodo
(c) Great Indian bustard
(d) Zebu

Options

A. passenger pigeon
B. dodo
C. great Indian bustard
D. zebu

Explanation

To determine which of the given animals is critically endangered, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the term "Critically Endangered":**
- Critically endangered is a conservation status assigned by the International Union for Conservation of Nature (IUCN). It indicates that a species is facing an extremely high risk of extinction in the wild.

2. **Review the options provided:**
- (a) Passenger pigeon
- (b) Dodo
- (c) Great Indian bustard
- (d) Zebu

3. **Evaluate each option:**
- **Passenger Pigeon:** This species is extinct, so it cannot be critically endangered.
- **Dodo:** This species is also extinct, thus it cannot be critically endangered.
- **Great Indian Bustard:** This bird is currently listed as critically endangered due to habitat loss and hunting pressures. It is on the brink of extinction.
- **Zebu:** This is a domesticated species of cattle and is not considered critically endangered.

4. **Identify the correct answer:**
- Based on the evaluation, the only species that is critically endangered is the **Great Indian Bustard**.

### Final Answer:
(c) Great Indian bustard

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