Application development doesn't occur in a vacuum. Typically there are multiple stakeholders to any development project, many of whom may not have a technical background. The interviewer wants to make sure you can effectively communicate with non-technical individuals. A good answer to this type of question is to demonstrate your understanding of the need to communicate effectively, stating your approach to this.

"Every application development project has multiple stakeholders outside of the development team. I understand that they aren't interested in the bits and bytes of how an application is developed but rather in the business-related issues such as time, resources, and the targeted outcomes. Therefore, when meeting with these stakeholders, I focus on these issues. When I need to share technical details of the project with them, I do it at a high level, without using acronyms or jargon. I then follow their lead if they ask specific questions or need additional information, again using language I'm sure they understand."