The correct option is B Amphibians
Endangered species
Endangered species are species that are on the verge of extinction.
According to the IUCN red list more than 400,000 species are endangered. In the present time, birds, amphibians, mammals and reptiles taxonomic groups are facing the extinction threat of 13%,41%,26% and 21% respectively.
Amphibians
The highest percentage of endangered species is the amphibians as they are more susceptible to habitat destruction, climate change, presence of invasive alien species etc.
Final answer
c. Amphibians.