How to Write a Formal Letter?
Address or greet the concerned person properly like Dear Sir/Madam.
Always mention the subject of writing the letter.
Be concise in your letter. ...
The tone of the letter should be very polite and not harsh.
Write in a proper format and take care of the presentation of a letter.
Mention the address and date correctly.
Is there the rest of this question somewhere?
A) It is stated clearly at the end of a piece.
A theme develops and evolves as the text progresses.