Which of the following are appropriate interview questions for requirements elicitation?

The question regarding appropriate interview questions for requirements elicitation focuses on gathering clear and actionable information relevant to the project. The selected answer is the most suitable because it directly addresses the specific needs of the project and helps to understand the scale and requirements for data processing.

In the context of requirements elicitation, knowing what data quantities are to be processed is crucial. This information helps in defining the capacity, performance requirements, and overall design of the system. Understanding data quantities can guide decisions on infrastructure, data handling methods, and system scalability, which are directly tied to meeting the project's goals.

While the other options may seem relevant in certain contexts, they tend to focus on contractual obligations or procedural timelines, which, although important, do not directly elicit the technical or functional requirements necessary for developing the application itself. Understanding the technical terms and penalties for delayed delivery are more about project management and contractual considerations rather than the specific requirements elicitation process. Hence, these do not fit as well within the framework of gathering requirements that will aid in delivering a successful system.