Which of the following best describes Non-Standard English?

Non-Standard English refers to forms of English that often deviate from conventional grammar, vocabulary, and pronunciation typically found in formal contexts. The description of Non-Standard English as casual and involving slang captures its essence well. This form of language may be used in informal settings, such as conversations among friends or in certain cultural or regional communities.

In contrast, the other options depict aspects of language that are more structured and formal. For example, language that is formally accepted in academic writing adheres strictly to standard grammatical rules and stylings expected in educational or professional contexts. Similarly, language that follows grammatical rules and conventions denotes the usage typically taught in schools and expected in formal writing. Lastly, a dialect recognized universally would imply a level of standardization and acceptance that is not characteristic of Non-Standard English, which can vary widely by region, culture, and subculture. Understanding these contrasts reinforces why the description of casual language with slang aligns most accurately with the concept of Non-Standard English.