Indri indri occurs in

Options

A. India
B. Mauritius
C. Fiji
D. Madagascar.

Answer

### Step-by-Step Solution

1. **Understanding the Question**: The question asks where the species Indri indri occurs. We need to identify the correct geographical location from the provided options: India, Mauritius, Fiji, and Madagascar.

2. **Identifying Indri indri**: Indri indri is a species of primate, specifically one of the largest living lemurs. Knowing its classification helps in understanding its habitat.

3. **Physical Characteristics**: Indri indri has a head and body length of approximately 64 to 72 cm and weighs between 6 to 9.5 kg. They are characterized by their distinct black and white coat and their ability to maintain an upright position while climbing.

4. **Habitat**: It is crucial to determine where Indri indri is found. The transcript states that Indri indri is endemic to Madagascar. This means that it is native to Madagascar and not found in any other location.

5. **Evaluating Options**:
- **India**: Incorrect, as lemurs are not found here.
- **Mauritius**: Incorrect, as Indri indri does not occur here.
- **Fiji**: Incorrect, as this species is not native to Fiji.
- **Madagascar**: Correct, as Indri indri is endemic to this island.

6. **Conclusion**: Based on the information gathered, the correct answer is that Indri indri occurs in Madagascar.

### Final Answer
Indri indri occurs in Madagascar.