Which of these contains information about endangered species of a region?

Options

A. Red Data Book
B. Plant Count Book
C. Animal Record Book
D. Species Richness Book

Answer

To answer the question "Which of these contains information about endangered species of a region?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: First, we need to identify the options provided in the question. Although the options are not listed in the prompt, we can infer that they might include various types of books or databases related to species information.

2. **Understand the Role of IUCN**: The International Union for Conservation of Nature (IUCN) is a key organization that assesses the conservation status of different species. It plays a crucial role in providing information about endangered species.

3. **Learn about the Red Data Book**: The Red Data Book is a publication by the IUCN that specifically lists endangered species. It categorizes species based on their conservation status, including categories like endangered, vulnerable, and critically endangered.

4. **Recognize the Importance of the Red Data Book**: The Red Data Book focuses on species that are at risk of extinction and provides critical information for their conservation. It highlights species that have experienced significant population declines, such as those with an 80% decline in numbers.

5. **Evaluate Other Options**: The other types of books mentioned (like Plant Count Book and Animal Record) do not specifically focus on endangered species. The Plant Count Book deals with plant species, while the Animal Record may provide general information about animals but not specifically about their conservation status.

6. **Conclude the Answer**: Based on the information gathered, the correct answer to the question is that the Red Data Book contains information about endangered species of a region.

### Final Answer:
The Red Data Book contains information about endangered species of a region.

---