Endemic species are

Options

A. Rare species
B. Species localised in a region
C. Cosmopolitan in distribution
D. Critically endangered species

Answer

### Step-by-Step Solution:

1. **Understanding Endemic Species**: Begin by defining what endemic species are. Endemic species are those species whose distribution is restricted to a specific geographical area. This means they are not found naturally anywhere else in the world.

2. **Characteristics of Endemic Species**: Emphasize that these species are localized, meaning their habitat and population are confined to a limited area. This can be due to various factors such as environmental conditions, evolutionary processes, or historical events.

3. **Example of Endemic Species**: Provide an example to illustrate the concept. For instance, kangaroos are endemic to Australia. They are native to this region and are not found in the wild in any other part of the world.

4. **Analyzing the Options**: If the question provides multiple-choice options, evaluate each one. In this case, one option states that endemic species are "species localized in a region," which aligns with the definition provided.

5. **Selecting the Correct Answer**: Based on the analysis, choose the option that correctly describes endemic species. Here, the correct answer is the one that states they are "species localized in a region."

### Final Answer:
Endemic species are species whose range is restricted to a limited geographical area, such as kangaroos, which are endemic to Australia. The correct answer is that they are "species localized in a region."

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