Question

Which one of the following letters would be considered formal?
A. A letter of application
B. A letter of invitation to an anniversary party
C. A personal letter to an old friend
D. A thank-you note to your grandmother

Answer 1

A letter of application i think

Answer 2

Although all those letter types could be written formally had its author decided, application letters are usually the most formal since its recipient expects that level of formality. So A is your best answer @3dchick. You were right all along.

Answer 3

letter of application is the answer