5 .Which of the following are in the red-listed category?Endangered and vulnerable speciesHighly populated speciesEither (a) or (b)Neither a nor b

To determine which of the options are in the red-listed category, we need to refer to the IUCN Red List. The IUCN Red List includes species categorized as threatened, which encompasses various levels of risk, such as:

1. Endangered Species: These are species at risk of extinction.
2. Vulnerable Species: These are species that are not currently endangered but are at risk and could become endangered without proper conservation efforts.

Analysis

• Highly populated species: These are typically not included in the red list unless they are facing significant threats.
• Since both "Endangered" and "Vulnerable" species are recognized categories on the IUCN Red List, they both belong to the red-listed category.

Conclusion

Based on this analysis, the correct answer is:

• Endangered and Vulnerable Species

Thus, the answer to the question is: Endangered and Vulnerable Species are in the red-listed category.