Correct option is A
Explanation:
As per the 2022 IUCN Red List, amphibians have the highest percentage of species that are threatened with extinction. A large proportion of amphibian species are facing threats due to habitat loss, climate change, disease, and pollution. Over 40% of amphibians are classified as threatened, which is the highest among all major groups of animals.
Information Booster:
The IUCN Red List assesses the conservation status of species globally, and amphibians consistently rank among the most threatened.
Habitat loss, particularly in tropical regions, and diseases like chytridiomycosis have had severe impacts on amphibian populations.
Amphibians play a vital role in ecosystems, and their decline is a significant indicator of broader environmental problems.
Birds, mammals, and reptiles also face significant threats, but the proportion of species in those groups that are threatened is lower compared to amphibians.
Additional Knowledge:
Amphibians (option 1) have been shown to have the highest percentage of threatened species due to a combination of factors, including habitat loss, climate change, and diseases.
Reptiles (option 4), while threatened, have a slightly lower proportion of species classified as at risk compared to amphibians.
Mammals (option 3) and birds (option 2) also have high conservation concerns, but they do not have the highest percentage of threatened species compared to amphibians.
