What do experts generally agree on regarding language variation?

Experts generally agree that languages evolve to meet the needs of speakers because language is a dynamic and adaptive system influenced by social, cultural, and technological changes. As communities develop and interact, new words, phrases, and grammatical structures emerge to reflect and accommodate shifts in society, including changes in technology, migration, and cultural exchange. This evolution allows speakers not only to communicate more effectively but also to express their identities and experiences in a way that resonates with their contemporary context.

In contrast, the ideas presented in the other options fail to capture the inherent fluidity of language. While languages may appear stable at times, they are never truly static or fixed; they continuously adapt to the needs and creativity of their users. Additionally, the notion that dialectal distinctions are diminishing overlooks the reality that many dialects are flourishing and evolving as they reflect the unique identities of their speakers.