As you are aware, the two main style guides in US writing include AP Style (The Associated Press Stylebook) and The Chicago Manual of Style, more simply referred to as Chicago style. The interviewer is looking for in-depth knowledge of each method and when it is more appropriate to use one over the other. Discuss when you would use each, and give an example of a project you have completed, using each style guide. If you have completed knowledge testing on either of these style guides, you can mention your results.

"I find that AP Style is my go-to style for more casual or general writing such as online articles. The rules are more basic and less formal. I will incorporate the New Your Style Manual for legal documents, as I do have some clients who require legal editing. When it comes to academic papers, such as my thesis, I utilize Chicago Style. I recently took testing on all three style guides, and AP Style was my strongest with Chicago Style coming in a close second place."