Red Data Book is to maintain Redlist published by

Options

A. WCU (IUCN)
B. CITES
C. WWF-N
D. TRAFFIC

Answer

**Step-by-Step Solution:**

1. **Understanding the Red Data Book**: The Red Data Book is a comprehensive document that contains information about all endangered species. It serves as a critical resource for conservation efforts and biodiversity studies.

2. **Identifying the Publisher**: The Red Data Book, also known as the Red List, was adopted by the International Union for Conservation of Nature (IUCN) in 1964. This organization is responsible for maintaining the Red List, which categorizes species based on their conservation status.

3. **Evaluating the Options**: The question provides several options:
- A) WCO
- B) IUCN
- C) CITES
- D) WWF
- E) TRAFFIC

4. **Analyzing Each Option**:
- **WCO**: This is not a recognized organization related to the Red Data Book.
- **IUCN**: Correct answer, as it maintains the Red List.
- **CITES**: This stands for the Convention on International Trade in Endangered Species, which is a treaty but does not maintain the Red List.
- **WWF**: The World Wildlife Fund is a leading organization in conservation but does not maintain the Red List.
- **TRAFFIC**: This is a network that monitors wildlife trade but is not responsible for maintaining the Red List.

5. **Conclusion**: After evaluating all options, the correct answer is B) IUCN, as it is the organization that maintains the Red Data Book and publishes the Red List.