Question

The Caribbean monk seal was declared extinct in 2008. Although there are other types of seals on Earth, Caribbean monk seals could only breed with other Caribbean monk seals.
The last Caribbean monk seal that died was the last member of
a species.
a community.
a biome.
an ecosystem.

Answer 1

a species.

Reason: a species is a group of organisms that can interbreed. The last Caribbean monk seal was the last member of that species (not of an entire community, ecosystem, or biome).