Answer: A. What type of style - formal or informal - will my readers best respond to?
Step-by-step explanation:
A procedural document simply refers to the document which outlines the procedure for a particular thing. The main purposes of the procedural documents are to persuade, inform, and to inquire.
In order to address the audience correctly, the question that should be asked is "What type of style - formal or informal - will my readers best respond to?"