More extensive use of listening and speakinga.A. Professional Englishb.D. Informal Englishc.B. General Englishd.C. Academic English

When considering the "more extensive use of listening and speaking," we can look at the different contexts in which English is used, which are represented by the options provided.

• Professional English (a) typically refers to language used in business or professional settings. This form emphasizes clarity, brevity, and often incorporates specific terminologies relevant to industries. Listening and speaking in this context might include presentations, meetings, and negotiations.

• Informal English (b) is the type of language used in everyday casual conversations. This form of English is characterized by slang, colloquialisms, and a relaxed structure, which are commonly utilized in personal interactions.

• General English (c) serves as a broad category that encompasses everyday language used in various contexts—not overly formal or academic, but suitable for typical conversations. It usually requires a good balance of listening and speaking skills for social interactions.

• Academic English (d) is a more formal register used in educational settings. It involves complex vocabulary and structures conducive to lectures, presentations, and discussions among academic peers. Effective listening and speaking skills are crucial in this context for comprehension and interaction during classes and seminars.

Among these, General English (c) is the answer that aligns most closely with the idea of a "more extensive use of listening and speaking," as it encompasses a variety of everyday interactions and does not confine itself to formal or specific contexts.