Which of these occasions is best sited to write a Business letter?

Question

Question: Which of these occasions is best sited to write a Business letter?

Options:

1.  To apologize to your office friend
2.  To narrate a factual event to your parents
3.  To express a concern for a product
4.  All of these

Answer 1

3. To express a concern for a product

The best sited to write a business letter is to express a concern for a product.