What cultural feature leads to a language being classified as endangered or dying?

(1 point)

States that previously listed the language as their official language have become part of a country using a different language.

Parents who speak the language are unable or unwilling to teach it to their own children.

States that previously listed the language as their institutional language have ceased to exist as independent states.

Researchers determine that the language's working vocabulary is too small to justify treating it as a language.

Researchers determine that the language has no literary tradition of poetry and narrative.

All of the options mentioned can be cultural features that contribute to classifying a language as endangered or dying. However, the option that directly relates to the language itself is "Researchers determine that the language's working vocabulary is too small to justify treating it as a language." This means that if researchers determine that a language has a very limited vocabulary and lacks the necessary linguistic resources to be considered a fully developed language, it might be classified as endangered or dying.