During which step of the writing process should you select the medium and channel to be used?

A) Writing
B) Composing
C) Producing
D) Planning
E) Completing

Selecting the medium (such as email, letter, or presentation) and channel (such as in-person, phone call, or social media) should be done during the planning stage of the writing process. This ensures that the message is being delivered through the most appropriate method to effectively reach the intended audience.