To write good business English, it is important to follow certain guidelines. Here's a breakdown of the options provided:
1. **State your purpose first**: This is crucial in business writing as it helps the reader understand the intention behind the communication right from the start. It sets the tone and provides clarity.
2. **Use short sentences**: Using short sentences is beneficial in business writing because it enhances readability and comprehension. It helps convey information clearly and directly.
3. **Use short words**: Employing short and simple words is effective in business communication. It avoids confusion and ensures that the message is easily understood by a wide range of audiences.
Therefore, the correct answer to the question "Writing good business English means you..." would be **"All of these."** By incorporating all these elements into your business writing, you can ensure that your communication is concise, clear, and impactful, leading to effective and successful interactions in a professional environment.