Convergent evolution is evidenced in the opposable thumb, which both opossums and primates, including humans, possess. this is considered what type of structure?

analogous

convergent

homologous

vestigial

Convergent evolution — the repeated evolution of similar traits in multiple lineages which all ancestrally lack the trait — is rife in nature, as illustrated by the examples below. The ultimate cause of convergence is usually a similar evolutionary biome, as similar environments will select for similar traits in any species occupying the same ecological niche, even if those species are only distantly related. In the case of cryptic species, it can create species which are only distinguishable by analysing their genetics. Unrelated organisms often develop analogous structures by adapting to similar environments.