The interviewer wants to know that you are capable of explaining complex ideas without being condescending to your co-workers or talking over their heads. Give the interviewer an example of how you break down information to make it more easily digestible for the average person.
Think of a presentation about a complex topic, as a proposal to solve a challenging problem. The solution may seem obvious to you, but everyone else in the room is scratching their heads trying to figure out what you're talking about. When you can define key terms and phrases to make them more relevant to your audience, you have skill! Not everyone can do this.
Prepare an example that demonstrates your communication skills and your ability to convey complex information in easy to understand terms.
