which type of writing style should be used for academic essays?\no intellectual\no formal\no informal\no slang

Brief Explanations:

Academic essays require a professional and objective tone. Formal writing style adheres to grammar rules, uses precise language, and avoids colloquialisms, slang, and overly - personal language. Intellectual is too broad a term and not the most specific description for academic writing style. Informal and slang are inappropriate for academic contexts.

Answer:

B. Formal