Final answer:
A non-functional requirement is a statement that a software product must have certain properties. Development and operational requirements are not part of non-functional requirements. The correct answer is A. A non-functional requirement is also called behavioral requirements.
Step-by-step explanation:
A non-functional requirement is a statement that a software product must have certain properties. Non-functional requirements are related to the overall behavior and characteristics of the software, rather than its specific functionality. They define how the software should perform in terms of performance, reliability, security, usability, and other aspects.
Development and operational requirements are not part of non-functional requirements. Development requirements focus on the process of developing the software, while operational requirements pertain to how the software operates in its deployment environment.
Therefore, the correct answer to the question is: A. A non-functional requirement is also called behavioral requirements.