If you have experience communicating complex information, give a specific example that clearly outlines your approach. If you don't have experience in this area, take some time to research strategies for communicating complex ideas. This way, you'll be able to assure the interviewer that you do have this skill set.

"The most important part of explaining a complex topic is understanding the audience you're explaining it to. This helps prevent over or under-explaining. If the audience has some basic knowledge of the topic, I usually start by offering a reminder of those key points, and then I build on to the key ideas. Scaffolding concepts in this way works really well. If the audience isn't expected to have any background knowledge at all, then I'll start from the ground up, using comparisons with widely known concepts to build a foundation that I can then elaborate on."