The primary aim of this question is to evaluate your communication skills in how effectively you can explain something complex in relatable terms. Avoid rambling or explaining it in a roundabout way without being condescending. 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 saying. When you can define key terms and phrases to make them more relevant to your audience, you have skills! 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.