Answer:A good business letter has several important qualities:1. Clear Purpose: The reason for writing should be clear from the start.2. Professional Tone: Use polite and formal language.3. Proper Format: Follow a standard format, including the sender's address, date, recipient's address, greeting, body, closing, and signature.4. Concise Content: Keep it brief and to the point, avoiding unnecessary details.5. Correct Grammar and Spelling: Proofread to ensure there are no mistakes.6. Specific Details: Include relevant information, such as dates, names, and any necessary context.7. Call to Action: If needed, suggest what you want the recipient to do next.