Which of the following is not a key consideration when developing a piece of writing?

A. The purpose of the message

B. The intended audience

C. The timeless of the message

D. The format of the message

I believe all are important components in developing a piece of writing each is unique in there own way and need to be considered. But in answer to your question i believe that the least important would be the timeless of the message. As long as the message gets across to the intended audience the message can be as long as you deem it necessary