1) This is the version of English language that regarded as model in America for writers and speakers who are considered educated.?

The version of English language regarded as the model in America for writers and speakers who are considered educated is Standard American English (SAE).

While it's important to remember that language is constantly evolving and there's no single, universally accepted "correct" way to speak, SAE is generally considered the prestige variety of American English. It is:

* The language of education: Used in schools, textbooks, and official documents.

* The language of media: Found in newspapers, magazines, and major news outlets.

* The language of business: Used in professional settings and official communications.

SAE is not about being "better" than other dialects, but rather about having a shared language that facilitates communication and understanding across a wide range of contexts.