When determining whether to write a scannable résumé, an online résumé, or a plain text PDF file, what step in the writing process is being considered?

Choosing the channel and medium

Explanation:

Choosing channel and medium is a part of writing process which determine the best way to deliver your writing to your target audience.

Writers need to choose an appropriate channel or medium based on the purpose of the writing and the type of people who read it.

For example, When you write to apply for a job, writing in a  scannable résumé format would be the best option since most job recruiters use this to eliminate the majority of the candidates.

If you want to write an apology or a gratitude letter, handwriting will be the best medium since it will make the writing seems more personal